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Technical Data Sheet
PartsTable / COMPONENT / NKS51957-31
NKS51957-31 ✓ 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 SCREW,MACHINE is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-054-6655, 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
NKS51957-31
NSN: 5305-00-054-6655
FSC: 5305
CAGE: 03038 — LONG-LOK, LLC (USA)
SPECIFICATIONS
Part NumberNKS51957-31
NSN5305-00-054-6655
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: NKS51957-31 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 40
230-207-028Interchangeable
interchangeable cross-reference
interchangeable
AN515C6-6Interchangeable
interchangeable cross-reference
interchangeable
5000 251904Interchangeable
interchangeable cross-reference
interchangeable
60-23-9652Interchangeable
interchangeable cross-reference
interchangeable
245205Interchangeable
interchangeable cross-reference
interchangeable
787-24-02-004Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NKS51957-31?
NKS51957-31 is a SCREW,MACHINE.
What parts can replace NKS51957-31?
There are 40 known substitutes for NKS51957-31: 230-207-028, AN515C6-6, 5000 251904 and 37 more. Substitute compatibility should be verified for your specific system.
Is NKS51957-31 still available?
NKS51957-31 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026