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4K5175 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

4K5175: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: DOUBLE HEXAGON EXTENDED WASHER, head_height: 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 1.234 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN, fastener_length: 1.484 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-253-7627, 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
4K5175
NSN: 5306-00-253-7627
FSC: 5306 — Bolts
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleDOUBLE HEXAGON EXTENDED WASHER
head_height0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
thread_class3A A
thread_length1.234 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN
fastener_length1.484 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
hardness_rating36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
width_between_flats0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
nominal_thread_diameter0.500 INCHES IN
extended_washer_diameter0.738 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
NSN5306-00-253-7627
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 4K5175 · 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
•
EXTENDED WASHER THICKNESS: 0.187 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.484 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.738 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
THREAD LENGTH: 1.234 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN
•
HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
FEATURES PROVIDED: FINISHED HEAD
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.187 INCHES NOMINAL IN
HEAD HEIGHT0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
FASTENER LENGTH1.484 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.738 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
THREAD LENGTH1.234 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER0.500 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLEDOUBLE HEXAGON EXTENDED WASHER
THREAD DIRECTIONRIGHT-HAND
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4K5175?
4K5175 is a BOLT,MACHINE.
What is the NSN for 4K5175?
4K5175 is cataloged in the U.S. Government catalog under NSN 5306-00-253-7627. 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.