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0178651 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

0178651: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, head_style: KNURLED NO. 1, head_height: 0.302 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.729 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN, thread_length: 0.566 INCHES MINIMUM AND 0.590 INCHES MAXIMUM IN.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-615-7303, 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
0178651
NSN: 5305-01-615-7303
FSC: 5305 — Screws
CAGE: 0Y3H3 — FASTENAL COMPANY DBA FASTENAL CO (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
head_styleKNURLED NO. 1
head_height0.302 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.729 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
thread_length0.566 INCHES MINIMUM AND 0.590 INCHES MAXIMUM IN
shoulder_shapeROUND OVERALL
fastener_length1.090 INCHES MINIMUM AND 1.130 INCHES MAXIMUM IN
shoulder_length0.402 INCHES MINIMUM AND 0.412 INCHES MAXIMUM OVERALL IN
thread_directionRIGHT-HAND
shoulder_diameter0.4960 INCHES MINIMUM AND 0.4980 INCHES MAXIMUM OVERALL IN
width_across_flats0.2500 INCHES MINIMUM AND 0.2530 INCHES MAXIMUM IN
NSN5305-01-615-7303
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 0178651 · 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
•
WIDTH ACROSS FLATS: 0.2500 INCHES MINIMUM AND 0.2530 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.302 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.090 INCHES MINIMUM AND 1.130 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.402 INCHES MINIMUM AND 0.412 INCHES MAXIMUM OVERALL IN
•
SHOULDER DIAMETER: 0.4960 INCHES MINIMUM AND 0.4980 INCHES MAXIMUM OVERALL IN
•
THREAD LENGTH: 0.566 INCHES MINIMUM AND 0.590 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND OVERALL
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.2500 INCHES MINIMUM AND 0.2530 INCHES MAXIMUM IN
HEAD HEIGHT0.302 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
FASTENER LENGTH1.090 INCHES MINIMUM AND 1.130 INCHES MAXIMUM IN
SHOULDER LENGTH0.402 INCHES MINIMUM AND 0.412 INCHES MAXIMUM OVERALL IN
SHOULDER DIAMETER0.4960 INCHES MINIMUM AND 0.4980 INCHES MAXIMUM OVERALL IN
THREAD LENGTH0.566 INCHES MINIMUM AND 0.590 INCHES MAXIMUM IN
SHOULDER SHAPEROUND OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD STYLEKNURLED NO. 1
THREAD DIRECTIONRIGHT-HAND
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES 1
CC-0010731Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 0178651?
0178651 is a SCREW,SHOULDER.
What parts can replace 0178651?
There is 1 known substitute for 0178651: CC-0010731. Substitute compatibility should be verified for your specific system.
What is the NSN for 0178651?
0178651 is cataloged in the U.S. Government catalog under NSN 5305-01-615-7303. 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.