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Technical Data Sheet
PartsTable / COMPONENT / 399960
399960 ✓ 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 BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1035 OVERALL, head_style: HEXAGON, head_height: 0.234 INCHES NOMINAL IN, thread_class: 3A A, thread_length: 0.438 INCHES MINIMUM IN, fastener_length: 1.250 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-174-4197, 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
399960
NSN: 5306-00-174-4197
FSC: 5306
CAGE: 65282 — WHITE MOTOR CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 1035 OVERALL
head_styleHEXAGON
head_height0.234 INCHES NOMINAL IN
thread_class3A A
thread_length0.438 INCHES MINIMUM IN
fastener_length1.250 INCHES NOMINAL IN
thread_directionRIGHT-HAND
features_providedCASEHARDENED AND FINISHED HEAD
width_between_flats0.500 INCHES NOMINAL IN
nominal_thread_diameter0.312 INCHES IN
thread_quantity_per_inch24
thread_series_designatorUNF
NSN5306-00-174-4197
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 399960 · 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
•
THREAD CLASS: 3A A
•
HEAD STYLE: HEXAGON
•
THREAD LENGTH: 0.438 INCHES MINIMUM IN
•
THREAD SERIES DESIGNATOR: UNF
•
WIDTH BETWEEN FLATS: 0.500 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
HEAD HEIGHT: 0.234 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1035 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3A A
HEAD STYLEHEXAGON
THREAD LENGTH0.438 INCHES MINIMUM IN
THREAD SERIES DESIGNATORUNF
WIDTH BETWEEN FLATS0.500 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
HEAD HEIGHT0.234 INCHES NOMINAL IN
MATERIALSTEEL COMP 1035 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD QUANTITY PER INCH24
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
MS35140-4Upgraded Successor
successor cross-reference
successor
115Upgraded Successor
successor cross-reference
successor
375Upgraded Successor
successor cross-reference
successor
S57Upgraded Successor
successor cross-reference
successor
8380561Upgraded Successor
successor cross-reference
successor
AXM115Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 399960?
399960 is a BOLT,MACHINE.
What parts can replace 399960?
There are 16 known substitutes for 399960: MS35140-4, 115, 375 and 13 more. Substitute compatibility should be verified for your specific system.
Is 399960 still available?
399960 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