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7953458 — BOLT,RIBBED NECK

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

7953458: BOLT,RIBBED NECK.

The BOLT,RIBBED NECK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1040 OR STEEL COMP 1541 OVERALL, head_style: BUTTON, rib_length: 0.220 INCHES NOMINAL IN, head_height: 0.160 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 0.620 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-630-9934, 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
7953458
NSN: 5306-00-630-9934
FSC: 5306 — Bolts
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1040 OR STEEL COMP 1541 OVERALL
head_styleBUTTON
rib_length0.220 INCHES NOMINAL IN
head_height0.160 INCHES NOMINAL IN
thread_class3A A
head_diameter0.620 INCHES NOMINAL IN
thread_length0.750 INCHES MAXIMUM IN
fastener_length1.380 INCHES NOMINAL IN
hardness_rating27.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
rib_major_diameter0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN
nominal_thread_diameter0.375 INCHES IN
NSN5306-00-630-9934
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 7953458 · 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: 0.160 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.380 INCHES NOMINAL IN
•
THREAD LENGTH: 0.750 INCHES MAXIMUM IN
•
HARDNESS RATING: 27.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
•
RIB LENGTH: 0.220 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
HEAD STYLE: BUTTON
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.160 INCHES NOMINAL IN
FASTENER LENGTH1.380 INCHES NOMINAL IN
THREAD LENGTH0.750 INCHES MAXIMUM IN
HARDNESS RATING27.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
RIB LENGTH0.220 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD STYLEBUTTON
THREAD DIRECTIONRIGHT-HAND
RIB MAJOR DIAMETER0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN
THREAD CLASS3A A
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-004-7044 5306-00-007-6129 5306-00-008-7899 5306-00-009-4739 5306-00-118-7332 5306-00-151-1777 5306-00-255-4507 5306-01-101-2459
SUBSTITUTES & CROSS-REFERENCES 1
919547Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7953458?
7953458 is a BOLT,RIBBED NECK.
What parts can replace 7953458?
There is 1 known substitute for 7953458: 919547. Substitute compatibility should be verified for your specific system.
What is the NSN for 7953458?
7953458 is cataloged in the U.S. Government catalog under NSN 5306-00-630-9934. 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.