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3924670C1 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

3924670C1: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OVERALL, head_style: FLAT FILLISTER, head_height: 0.188 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.375 INCHES NOMINAL IN, thread_length: 0.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-568-0455, 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
3924670C1
NSN: 5305-01-568-0455
FSC: 5305 — Screws
CAGE: 338X5 — ND DEFENSE LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OVERALL
head_styleFLAT FILLISTER
head_height0.188 INCHES NOMINAL IN
thread_class2A A
head_diameter0.375 INCHES NOMINAL IN
thread_length0.250 INCHES NOMINAL IN
shoulder_shapeROUND OVERALL
fastener_length0.750 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
hardness_rating32.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
shoulder_length0.500 INCHES MINIMUM AND 0.502 INCHES MAXIMUM OVERALL IN
thread_directionRIGHT-HAND
shoulder_diameter0.250 INCHES MINIMUM AND 0.251 INCHES MAXIMUM OVERALL IN
NSN5305-01-568-0455
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3924670C1 · 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: 0.125 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.188 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.750 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.500 INCHES MINIMUM AND 0.502 INCHES MAXIMUM OVERALL IN
•
SHOULDER DIAMETER: 0.250 INCHES MINIMUM AND 0.251 INCHES MAXIMUM OVERALL IN
•
THREAD LENGTH: 0.250 INCHES NOMINAL IN
•
SHOULDER SHAPE: ROUND OVERALL
•
HARDNESS RATING: 32.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.125 INCHES NOMINAL IN
HEAD HEIGHT0.188 INCHES NOMINAL IN
FASTENER LENGTH0.750 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
SHOULDER LENGTH0.500 INCHES MINIMUM AND 0.502 INCHES MAXIMUM OVERALL IN
SHOULDER DIAMETER0.250 INCHES MINIMUM AND 0.251 INCHES MAXIMUM OVERALL IN
THREAD LENGTH0.250 INCHES NOMINAL IN
SHOULDER SHAPEROUND OVERALL
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD STYLEFLAT FILLISTER
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 1
92012A537Same 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 3924670C1?
3924670C1 is a SCREW,SHOULDER.
What parts can replace 3924670C1?
There is 1 known substitute for 3924670C1: 92012A537. Substitute compatibility should be verified for your specific system.
What is the NSN for 3924670C1?
3924670C1 is cataloged in the U.S. Government catalog under NSN 5305-01-568-0455. 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.