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PartsTable / COMPONENT / A6 1-2 40
A6 1-2 40 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include diameter: 0.687 INCHES NOMINAL IN, material: STEEL OVERALL, drive_type: SLOTTED, grip_length: 0.760 INCHES NOMINAL IN, shank_neck_length: 0.530 INCHES NOMINAL IN, surface_treatment: CADMIUM OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-449-3176, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
A6 1-2 40
NSN: 5325-00-449-3176
FSC: 5325
CAGE: 72794 — SOUTHCO INC (USA)
SPECIFICATIONS
diameter0.687 INCHES NOMINAL IN
materialSTEEL OVERALL
drive_typeSLOTTED
grip_length0.760 INCHES NOMINAL IN
shank_neck_length0.530 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
turnlock_stud_head_styleFILLISTER
stud_shank_major_diameter0.406 INCHES NOMINAL IN
turnlock_stud_shank_styleSTUD SHANK
material_accommodated_thickness0.391 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
NSN5325-00-449-3176
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: A6 1-2 40 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SURFACE TREATMENT: CADMIUM OVERALL
•
SHANK NECK LENGTH: 0.530 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
MATERIAL ACCOMMODATED THICKNESS: 0.391 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
STUD SHANK MAJOR DIAMETER: 0.406 INCHES NOMINAL IN
•
DRIVE TYPE: SLOTTED
•
DIAMETER: 0.687 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTCADMIUM OVERALL
SHANK NECK LENGTH0.530 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
MATERIAL ACCOMMODATED THICKNESS0.391 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
TURNLOCK STUD SHANK STYLESTUD SHANK
STUD SHANK MAJOR DIAMETER0.406 INCHES NOMINAL IN
DRIVE TYPESLOTTED
DIAMETER0.687 INCHES NOMINAL IN
TURNLOCK STUD HEAD STYLEFILLISTER
GRIP LENGTH0.760 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
14402Interchangeable
interchangeable cross-reference
interchangeable
A6540Interchangeable
interchangeable cross-reference
interchangeable
46-0992-1Interchangeable
interchangeable cross-reference
interchangeable
76292Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A6 1-2 40?
A6 1-2 40 is a STUD,TURNLOCK FASTENER.
What parts can replace A6 1-2 40?
There are 4 known substitutes for A6 1-2 40: 14402, A6540, 46-0992-1 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A6 1-2 40?
A6 1-2 40 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-449-3176. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026