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4K-7038 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

4K-7038: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: CROWNED HEXAGON, head_height: 0.593 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.843 INCHES NOMINAL IN, fastener_length: 0.968 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-122-4086, 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
4K-7038
NSN: 5306-00-122-4086
FSC: 5306 — Bolts
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleCROWNED HEXAGON
head_height0.593 INCHES NOMINAL IN
thread_class2A A
thread_length0.843 INCHES NOMINAL IN
fastener_length0.968 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_between_flats0.859 INCHES NOMINAL IN
nominal_thread_diameter0.562 INCHES IN
thread_quantity_per_inch18
thread_series_designatorUNF
NSN5306-00-122-4086
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 4K-7038 · 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: 0.593 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.968 INCHES NOMINAL IN
•
THREAD LENGTH: 0.843 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.562 INCHES IN
•
HEAD STYLE: CROWNED HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 0.859 INCHES NOMINAL IN
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.593 INCHES NOMINAL IN
FASTENER LENGTH0.968 INCHES NOMINAL IN
THREAD LENGTH0.843 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.562 INCHES IN
HEAD STYLECROWNED HEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.859 INCHES NOMINAL IN
THREAD CLASS2A A
THREAD QUANTITY PER INCH18
MATERIALSTEEL OVERALL
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
31-4K7038Reference 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 4K-7038?
4K-7038 is a BOLT,MACHINE.
What parts can replace 4K-7038?
There is 1 known substitute for 4K-7038: 31-4K7038. Substitute compatibility should be verified for your specific system.
What is the NSN for 4K-7038?
4K-7038 is cataloged in the U.S. Government catalog under NSN 5306-00-122-4086. 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.