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38031-3C-8 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

38031-3C-8: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL, head_style: BUTTON, head_height: 0.091 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.347 INCHES MINIMUM AND 0.361 INCHES MAXIMUM IN, thread_length: 0.435 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-310-7992, 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
38031-3C-8
NSN: 5305-01-310-7992
FSC: 5305 — Screws
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL
head_styleBUTTON
head_height0.091 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.347 INCHES MINIMUM AND 0.361 INCHES MAXIMUM IN
thread_length0.435 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
fastener_length0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.190 INCHES IN
NSN5305-01-310-7992
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 38031-3C-8 · 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 MINIMUM AND 0.127 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.091 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.435 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A493 ASSN STD ALL MATERIAL RESPONSES OVERALL
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
HEAD STYLE: BUTTON
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN
HEAD HEIGHT0.091 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN
FASTENER LENGTH0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
THREAD LENGTH0.435 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A493 ASSN STD ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD STYLEBUTTON
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTPASSIVATE OVERALL
INTERNAL DRIVE STYLEHEXAGON
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
5727654-27Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 38031-3C-8?
38031-3C-8 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 38031-3C-8?
There is 1 known substitute for 38031-3C-8: 5727654-27. Substitute compatibility should be verified for your specific system.
What is the NSN for 38031-3C-8?
38031-3C-8 is cataloged in the U.S. Government catalog under NSN 5305-01-310-7992. 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.