Spiralock. The edge is in the wedge. Fasteners & Wire Thread Inserts. Product Specifications

Transcription

1 piralock The edge is in the wedge Fasteners & Wire Thread Inserts Product pecifications A9100 REV B and IO 9001:2000 Certificate umber: FM77129

2 piralock Internal Locking Thread Form On the following pages you will find information on the piralock Fastener Products. The majority of the products listed in this catalog are available for prompt shipment. If for any reason your required size is not listed in this catalog, please contact our offices at (800) or send an to We are able to supply and/or design any fastener your application may require. For additional information on piralock technology, products and applications, please visit our website, TABLE OF COTET: Product Introduction. 2 Things to Know About the piralock Thread Form.. 3 Fastener Product Offering 5 Fractional Hex Flange uts.. 6 Metric Hex Flange uts. 7 Fractional elf-clinching uts. 8 Metric elf-clinching uts. 9 Wire Thread Insert Dimensions 10 Wire Thread Insert EDP umbers.. 12 Wire Thread Insert Installation Instructions. 13 Wire Thread Insert Fitting Tools. 14 Wire Thread Insert Hand Installation Tool (Tanged Inserts) 15 1

3 piralock Product Introduction piralock Corporation has re-engineered the standard (female) internal thread form and added a unique 30- degree wedge ramp at the root of the thread. This unidirectional internal thread form, called piralock, mates with standard 60-degree male thread fasteners. The wedge ramp allows the bolt to spin freely relative to the female threads until clamp load is applied. At that point, the crests of the standard male thread form are drawn tightly against the wedge ramp, eliminating radial clearances and creating a continuous spiral line contact along the entire length of the thread engagement. This continuous line contact spreads the clamp force more evenly over all the engaged threads, improving joint fatigue life as well as the integrity of the threaded joint. WHY UE PIRALOCK THREAD FORM? Prevents threaded joints from coming loose Reduces overall cost of threaded joints Eases assembly, thus reducing assembly time Improves joint fatigue life Keeps your customer happy and eliminates warranty claims WHERE TO APPLY PIRALOCK? Any hard joint Thin gasket application HOW TO APPLY PIRALOCK? Replace standard threaded nut or threaded hole with the piralock thread form and eliminate all other thread locking devices! 2

4 piralock Things to know about the piralock Thread Form MATE WITH TADARD MALE FATEER The piralock thread form is designed to mate with a standard 2A/3A fractional or 6g/6h metric male fastener. TORQUE/TEIO RELATIOHIP The piralock thread form design creates a helical line of contact between the crest of the bolt threads and its 30-degree wedge ramp. In order to generate similar joint tension as compared to 60-degree threads, the piralock threaded joint generally requires 10% - 20% greater torque due to the brinelling of male and female threads as well as the slight elastic deformation of the male thread. Although higher torque is required in all piralock threaded joints, the increase in required torque will vary depending on the types of materials being used (nut, bolt, joint, etc.). This torque/tension relationship should be evaluated in the actual joint to determine the proper torque required to develop the specified tension. tatic testing by the Goddard pace Flight Center has shown that piralock offers a very consistent pattern of friction, especially when the threads are lubricated. pecifically, non-lubricated piralock threads had a coefficient of friction or k-factor range of , while lubricated threads had a k-factor range of piralock s more consistent friction factor directly relates to a more consistent joint tension or preload. REITAT TO VIBRATIO LOOEIG Tension (lbs.) title PL ut All Metal PT ut Time (seconds) Extensive testing on Junkers transverse vibration equipment has proven that the piralock internal locking thread form outperforms other thread locking devices. In fact - unlike other locking devices, which lost preload within the first minute of testing - piralock remained tight until the bolts failed due to fatigue. Test Parameters: ¼-28 nut 1200 cycles/minute of transverse movement with +/ amplitude. Goddard pace Flight Center determined that the piralock thread form was the only product that could withstand the vibrations imposed by the pace huttle's solid rocket boosters. The most severe vibration tests did not loosen the nuts when they were subjected to both high amplitude sine and random tests, even tests that were ten times the specifications for the pace huttle did not loosen the piralock fasteners. 3

5 piralock Things to know about the piralock Thread Form LOAD DITRIBUTIO Research studies performed by Lawrence Livermore ational Laboratory, Massachusetts Institute of Technology and others have confirmed that the load carried by piralock threads is much more uniform than the standard 60-degree threads. Additionally, they show that the percentage of load on the first engaged thread produced with a piralock tap is significantly lower, 24% versus 64% with five thread engagement. piralock Thread tandard 60º Thread The uniform loading eliminates the load concentration at the first engaged thread, thereby reducing joint failures due to shearing and improving product performance. Furthermore, the piralock threaded joint eliminates transverse motion that causes loosening under vibration. Additionally, the piralock thread form distributes the joint load in a radial direction versus axial loading with the 60-degree threads, thus taking advantage of the material hoop strength and significantly reducing the chance of failure due to shear. FATIGUE LIFE Testing performed on 1/4-28 piralock fasteners in conjunction with A bolts has shown that piralock can enhance fatigue life 300% over standard fasteners. The even load distribution with piralock consistently reduces the stress concentration that leads to fatigue failures. 4

6 piralock Fastener Product Offering Products tyles izes * uts Wire Inserts tandard: Hex Flange Made to order: 12 Point Weld panner T-slot Channel Extension Tanged Drive otch (without tang) coming soon #2 to 4 M2 to M100 #4 to 7/16 M3 to M16 urface Coatings/Platings/ Material types Clear Zinc Chromate (standard) Others upon request Cadmium ilver Dry Film Lube Options - Grade 5, 8, PC 9 and 10 - tainless teel - mall Production Runs - Made to std: AE/IFI/ATM 1 to 3 Diameter Lengths Accessories: TI Taps and Gages, Inserting tem, Inserting Handle, Break-off Punch, Extraction Tool, Power/Prod. Tool, Manual Pre-Winder tocked elf- Clinching uts 4-40, 6-32, 8-32, 10-32, ¼-20 tainless teel Made to order elf-clinching uts Floating uts Blind Fasteners Miniature uts Computer Board Flush Fasteners tandoffs #2 to ½ M2 to M12 Brass teel tainless teel Made to order Threaded Inserts Pre-Molded Post-Molded Ultrasonic #2 to ¼ M3 to M6 Brass teel tainless teel * izes not listed above are available on made-to-order basis. Aluminum OTE: For information on elf-clinching uts and Threaded Inserts please contact piralock Corporation at (248) or (800)

7 piralock Fractional Hex Flange uts tandard piralock nuts are AE Grade 8 equivalent, and designed to mate with standard 2A and 3A class of fit bolts. piralock nuts dimensionally conform to IFI standards. Our standard plating is clear zinc chromate. Other nut styles, platings and materials are available upon request. ominal ut ize tock/ onstock EDP # 1/4-20 F04200M 1/4-28 F04280M 5/16-18 F05180M 5/16 24 F05240M 3/8 16 F06160M 3/8 24 F06240M 7/16 14 F07140M 7/16 20 F07200M 1/2-13 F08130M 1/2-20 F08200M 9/16 12 F09120M 9/16 18 F09180M 5/8 11 F10110M 5/8 18 F10180M 3/4-10 F12100M 3/4-16 F12160M 7/8 9 F14090M 7/8 14 F14140M 1 8 F16080M 1 12 F16120M A Flange Dia B Across Flats C Across Corners D ut Thickness E Minimum Flange Edge Thickness Minor Dia Mechanical properties per: AE J995, Grades 5 and 8 Dimensional properties per: IFI

8 piralock Metric Hex Flange uts The standard piralock flange nuts are Property Class 10 equivalent and designed to mate with standard 4h and 6h class of fit bolts. piralock nuts dimensionally conform to IFI standards. Our standard plating is clear zinc chromate. Other nut styles, platings and materials are available upon request. ominal ut ize tock/ onstock EDP # M5 x 0.8 M05080M M6 x 1.0 M06100M M8 x 1.00 M08100M M8 x 1.25 M08125M M10 x 1.25 M10125M M10 x 1.50 M10150M M12 x 1.25 M12125M M12 x 1.75 M12175M M14 x 1.25 M14125M M14 x 1.50 M14150M M14 x 2.00 M14200M M16 x 1.50 M16150M M16 x 2.00 M16200M M20 x 1.50 M20150M M20 x 2.50 M20250M M24 x 2.00 M24200M M24 x 3.00 M24300M A Flange Dia. B Across Flats C Across Corners D ut Thickness E Minimum Flange Edge Thickness Minor Dia Mechanical properties per: ATM A563M and IO 898-2, Classes 9, 10, 12 Dimensional properties per: IO 4161 and AI B M 7

9 elf-clinching uts Fractional izes piralock These load-bearing threaded fasteners for thin sheets (Aluminum, teel and other ductile materials) have a clinching ring that locks the displaced metal behind the tapered shank ensuring high pushout resistance. High torque out resistance is ensured when the knurled platform is embedded in the sheet metal. Thread ize tock/ onstock ¼-20 ¼-28 5/ / /8-16 EDP # A / ½ ½ *Tolerances: Hole size E ± 0.01 Minimum heet Thickness Hole ize in heet * C E T 1 Dist. Hole C/L To Edge

10 elf-clinching uts Metric izes piralock These load-bearing threaded fasteners for thin sheets (Aluminum, teel, and other ductile materials) have a clinching ring that locks the displaced metal behind the tapered shank ensuring high pushout resistance. High torque out resistance is ensured when the knurled platform is embedded in the sheet metal. Thread ize tock/ onstock M2 x 0.40 M2.5 x 0.45 M3 x 0.5 M3.5 x 0.6 M4 x 0.7 M5 x 0.8 M6 x 1.0 M8 x 1.25 M10 x 1.5 EDP # A Minimum heet Thickness Hole ize in heet * C E T 1 Dist. Hole C/L To Edge otes: Dimensions for metric sizes are in millimeters. Tolerances: *Hole ize E ± 0.25 Important: elf-clinching nuts are made to order and are available in either teel or tainless teel. Please specify material type when ordering. 9

11 piralock Wire Thread Insert Dimensions Threads into standard TI holes Accepts standard 2A/3A bolts (4h/6h) Replaces Heli-Coil locking inserts Proven superior vibration resistance to standard locking inserts Duplicates a piralock tapped hole Combines the advantages of wire inserts with the vibration resistance and load distribution of piralock Insert ize Tapped Hole Dimensions 1 Dia. Long 1.5 Dia. Long Major Pitch Dia. B Minor Dia. Dia. A Tapping Drill Runby* R L T C L T C M3x M4x M5x M6x M8x M10x M12x M16x mm mm # # # / / / G / / / P / / / W / / / mm

12 piralock Wire Thread Insert Dimensions continued Crest of bolts seats against ramp of special insert thread profile, preventing transverse movement of bolt relative to insert thus resisting loosening due to vibration. tandard Thread Insert piralock Thread Insert Insert 2 Dia. Long 2.5 Dia. Long 3 Dia. Long ize L T C L T C L T C M3x M4x M5x M6x M8x M10x M12x M16x / / / / / / / /

13 piralock Wire Thread Insert EDP umbers piralock wire thread inserts are made of 300 series austenitic stainless steel and are supplied unplated, unless specified otherwise. Cadmium plating (per QQ-P-416, Type II) can be requested by adding a 301 suffix to the basic EDP number (example: ). ilver plating is available for made to order inserts. ize 1 Dia. 1.5 Dia. 2 Dia. 2.5 Dia. 3 Dia. M3x M4x M5x M6x M8x M10x M12x M16x / / / / / / / /

14 piralock Wire Thread Insert Installation Instructions 1. Drill the hole IO Metric tapped holes comply with B Unified tapped holes comply with B elect drill size from the table. 2. Tap the hole With special insert tap. L T R C Maximum fitted length of insert Minimum full thread depth for blind holes and minimum metal thickness for through holes Minimum run out required for general purpose 15º lead tap umber of coils 3. Fit the insert 1. elect the appropriate insert key. lide the insert on to the key so that the tang of the insert engages in the driving slot at the forward end. 2. Apply assembly to the tapped hole. Avoiding a downward load on the tang, wind in the insert until the top coil is no less than half a coil below the top of the tapped hole. They key stems supplied for thread inserts up to and including M4 are stepped to prevent forcing of the tang during fitting. ote: When ordering stems for these sizes, the length of the insert should be specified. 4. Break off tang For insert sizes up to M6 or ¼ inch use the punch provided to remove the tang. Locate punch on tang and give sharp downward blow with a light hammer. For insert sizes above M6 or ¼ inch, the insert key may be used to remove the tang. First, turn the key so that it no longer engages in the tang of the insert. A sharp downward blow with a light hammer will remove the tang. Do not attempt to twist the tang off in any manner with the key. piralock wire inserts are manufactured from 300 series austenitic stainless steel, cold rolled to an ultimate tensile strength of approximately 200,000 to 250,000 psi (43-50 Rc); surface finish of 8-16 microinches. piralock wire inserts are manufactured in accordance with M21209 and MIL-I Cross section of wire is unique in order to accommodate the piralock wedge ramp. piralock wire inserts are installed into TI tapped holes that conform to M33537E, B 3409 and B piralock wire inserts accept standard U 2A/3A and IO 4h/6h bolts. Cadmium plating is per QQ-P-416, Type II, thick. For lubrication a small amount of liquid zinc chromate per Fed. pec. TT-P-1757 is recommended. 13

15 piralock Wire Thread Insert Taps & Fitting Tools Thread ize piral Flute Insert Taps traight Flute Bottom traight Flute Plug Tapped Hole Gage Inserting Handle Plain Type Inserting tems 1 Dia. 1 ½ Dia. 2 Dia. 2 ½ Dia. 3 Dia. Tang Break-off Punch Extraction tool M3x M4x * M5x M6x M8x M10x M12x M16x * For easy fitting use shouldered type stem on small sizes. elect stems to suit length of insert * * For easy fitting use shouldered type stem on small sizes. 1/ elect stems to suit length of insert / / / / / / /

16 Wire Thread Insert Hand Installation Tool (Tanged Inserts) piralock Prewinder Captive leeve ize Part umber A Dimension B Dimension C Dimension MPW 7-15/32 2-9/32 3/ MPW 7-15/32 2-9/32 3/ MPW 7-15/32 2-9/32 3/ MPW 7-15/32 2-9/32 7/ MPW 7-15/32 2-9/32 1/2 ¼ MPW 7-31/ /32 1/2 ¼ MPW 7-31/ /32 1/2 5/ MPW 7-31/ /32 5/8 5/ MPW 7-31/ /32 5/8 3/ MPW 7-31/ /32 11/16 3/ MPW 7-31/ /32 11/16 7/ MPW 8-15/ /32 3/4 7/ MPW 8-15/ /32 3/4 15

17 TEL: (800) (248) FAX: (248) On the Internet: Website: piralock Corporation a Detroit Tool Industries Company Madison Tech Center Dequindre Road P.O. Box Madison Heights, MI UA CHIA BRAZIL UITED KIGDOM (UA: A9100 REV B and IO 9001:2000 Quality ystem Certified)