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40-292391 — BOLT,RIBBED SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

40-292391: BOLT,RIBBED SHOULDER.

The BOLT,RIBBED SHOULDER is a the manufacturer industrial component. Key specifications include head_style: FLAT CHAMFER, rib_length: 0.125 INCHES NOMINAL IN, head_height: 0.094 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.563 INCHES NOMINAL IN, thread_length: 0.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-371-6436, 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
40-292391
NSN: 5306-00-371-6436
FSC: 5306 — Bolts
CAGE: 09348 — LUCAS WESTERN INC (USA)
SPECIFICATIONS
head_styleFLAT CHAMFER
rib_length0.125 INCHES NOMINAL IN
head_height0.094 INCHES NOMINAL IN
thread_class2A A
head_diameter0.563 INCHES NOMINAL IN
thread_length0.500 INCHES NOMINAL IN
fastener_length0.625 INCHES NOMINAL IN
rib_major_diameter0.468 INCHES MAXIMUM IN
NSN5306-00-371-6436
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 40-292391 · 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
•
HEAD HEIGHT: 0.094 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.625 INCHES NOMINAL IN
•
THREAD LENGTH: 0.500 INCHES NOMINAL IN
•
RIB LENGTH: 0.125 INCHES NOMINAL IN
•
HEAD STYLE: FLAT CHAMFER
•
RIB MAJOR DIAMETER: 0.468 INCHES MAXIMUM IN
•
THREAD CLASS: 2A A
•
HEAD DIAMETER: 0.563 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.094 INCHES NOMINAL IN
FASTENER LENGTH0.625 INCHES NOMINAL IN
THREAD LENGTH0.500 INCHES NOMINAL IN
RIB LENGTH0.125 INCHES NOMINAL IN
HEAD STYLEFLAT CHAMFER
RIB MAJOR DIAMETER0.468 INCHES MAXIMUM IN
THREAD CLASS2A A
HEAD DIAMETER0.563 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES 2
61115DSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
303242R1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 40-292391?
40-292391 is a BOLT,RIBBED SHOULDER.
What parts can replace 40-292391?
There are 2 known substitutes for 40-292391: 61115D, 303242R1. Substitute compatibility should be verified for your specific system.
What is the NSN for 40-292391?
40-292391 is cataloged in the U.S. Government catalog under NSN 5306-00-371-6436. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.