Drawings
Part Number Material Codes
- Substitute for “J” in the part number.
- J - Carbon Steel, 450⁰
- C, D – Corrosion Resistant Steel, 800⁰
Part Number Finish Codes
- Substitute for “XX” in the part number.
- XX - Unfinished Plain
- 2A - .0002 Clear Cadmium SAE AMS QQ-P-416, Type I, Class 3
- 2B - .0003 Clear Cadmium, SAE AMS QQ-P-416,Type I, Class 2
- 2C - .0003 Clear Cadmium /Yellow Chromate SAE AMS QQ-P-416, Type II, Class 2
- 2D - .0002 Zinc Tri Clear ASTM B633-15, SC 1, Type III
- 2E - Black Oxide AMS 2485K, MIL-DTL-13924D
- 2F - Phos & Oil 72 HR, ASTM F1137 Gr D
Standards & Specifications:
- Parts coated with a non-dry, wax type lubricant compliant to NASM25027
- Prevailing Torque Locking Performance compliant with requirements of NASM25027
- Threads as specified per MIL-S-8879 4. Dimensions and markings meet the requirements of MS21045, MS21046 and NAS1021
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All-Metal FlexSix Light Hex Locknut (Inch)
Product Description
The Aztech All-Metal Light Hex FlexSix (inch) is a NASM25027-compliant, all-metal prevailing torque locknut developed as a qualified alternative to legacy products. It derives its locking action entirely from the geometry of the nut itself — six deflected metal “beams” that grip the bolt thread mechanically across these discrete, engineered contact segments. Each beam carries a proportional share of the load for a locking action that is secure, uniform, and repeatable. Threads are 3B fit, further supporting the precision and performance of the product line. Certification of testing and performance is provided with each shipment.
Available variations cover a range of requirements, including heavy and thin patterns in a wide range of materials, including Steel, Stainless Steel, Brass and Aluminum.
Applications
The FlexSix Hex Locknut is the preferred choice in Aerospace as well as the most demanding industrial applications. This sector includes highly stressed machinery, turbine generators, high end sports and recreation equipment, and heavy-duty transportation manufacturers — applications where impact, shock, and vibration resistance and superior prevailing torque endurance are required. As an all-metal design it performs across temperature extremes.
Available Sizes
| Nut Type | Grade | Lock | Size | Thread | Availability |
|---|---|---|---|---|---|
| FlexSix | Assorted | All-Metal | #6 – 2″ | NASM25027 | Request a Quote |
| Thread Size |
Part Number Steel, Plain |
A Max Min |
B REF |
C Max |
D Min |
Proof Load Steel & CRES Min Lb |
|---|---|---|---|---|---|---|
| #6-32 UNJC 3B #6-40 UNJF 3B | 6CFLLJXXBQ 6FFLLJXXBQ | .313 .305 | .339 | .180 | .075 | 1,620 1,890 |
| #8-32 UNJC 3B #8-36 UNJF 3B | 8CFLLJXXBQ 8FFLLJXXBQ | .345 .336 | .374 | .243 | .105 | 2,510 2,620 |
| #10-24 UNJC 3B #10-32 UNJF 3B | 10CFLLJXXBQ 10FFLLJXXBQ | .376 .367 | .410 | .243 | .085 | 3,120 3,590 |
| #12-24 UNJC 3B #12-28 UNJF 3B | 12CFLLJXXBQ 12FFLLJXXBQ | .439 .430 | .482 | .290 | .122 | 4,350 4,630 |
| 1/4-20 UNJC 3B 1/4-28 UNJF 3B | 25CFLLJXXBQ 25FFLLJXXBQ | .439 .430 | .482 | .320 | .135 | 5,730 6,550 |
| 5/16–18 UNJC 3B 5/16-24 UNJF 3B | 31CFLLJXXBQ 31FFLLJXXBQ | .502 .492 | .552 | .353 | .150 | 9,600 9,950 |
| 3/8-16 UNJC 3B 3/8-24 UNJF 3B | 37CFLLJXXBQ 37FFLLJXXBQ | .564 .553 | .622 | .462 | .210 | 13,800 13,500 |
| 7/16-14 UNJC 3B 7/16-20 UNJF 3B | 43CFLLJXXBQ 43FFLLJXXBQ | .627 .616 | .696 | .462 | .210 | 14,900 15,450 |
| 1/2-13 UNJC 3B 1/2-20 UNJF 3B | 50CFLLJXXBQ 50FFLLJXXBQ | .752 .741 | .837 | .602 | .285 | 22,000 23,800 |
