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6L4004 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

6L4004: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thread_class: 2A A, thread_direction: RIGHT-HAND, width_between_flats: 0.312 INCHES NOMINAL IN, end_item_identification: FIRE PUMPS;WHIDBEY ISLAND CLASS LSD;VENTILATION, nominal_thread_diameter: 0.190 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-441-0259, 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
6L4004
NSN: 5306-00-441-0259
FSC: 5306 — Bolts
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thread_class2A A
thread_directionRIGHT-HAND
width_between_flats0.312 INCHES NOMINAL IN
end_item_identificationFIRE PUMPS;WHIDBEY ISLAND CLASS LSD;VENTILATION
nominal_thread_diameter0.190 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNF
NSN5306-00-441-0259
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 6L4004 · 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
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 0.312 INCHES NOMINAL IN
•
THREAD CLASS: 2A A
•
THREAD QUANTITY PER INCH: 32
•
MATERIAL: STEEL OVERALL
•
THREAD SERIES DESIGNATOR: UNF
TECHNICAL CHARACTERISTICS
NOMINAL THREAD DIAMETER0.190 INCHES IN
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.312 INCHES NOMINAL IN
THREAD CLASS2A A
END ITEM IDENTIFICATIONFIRE PUMPS;WHIDBEY ISLAND CLASS LSD;VENTILATION
THREAD QUANTITY PER INCH32
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORUNF
SUBSTITUTES & CROSS-REFERENCES 4
0370162Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
8N2276Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
370162Reference document
Same NSN cross-reference
Reference document — Secondary reference
37002-72Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6L4004?
6L4004 is a BOLT,MACHINE.
What parts can replace 6L4004?
There are 4 known substitutes for 6L4004: 0370162, 8N2276, 370162 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6L4004?
6L4004 is cataloged in the U.S. Government catalog under NSN 5306-00-441-0259. 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.