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Technical Data Sheet
PartsTable / COMPONENT / 391-813
391-813 ✓ Verified by PartsTable
Hypertec · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The 391-813 is a Hypertec industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-192-0489, 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
391-813
NSN: 5305-00-192-0489
FSC: 5305
CAGE: 77948 — SINGER CO THE (USA)
SPECIFICATIONS
Part Number391-813
ManufacturerHypertec
NSN5305-00-192-0489
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 391-813 · Hypertec ⚠ 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
SMB635885Interchangeable
interchangeable cross-reference
interchangeable
391Interchangeable
interchangeable cross-reference
interchangeable
391AInterchangeable
interchangeable cross-reference
interchangeable
90-5243297Interchangeable
interchangeable cross-reference
interchangeable
136BLACKInterchangeable
interchangeable cross-reference
interchangeable
ZCC10189Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 391-813?
391-813 is a 391-813 manufactured by Hypertec.
What parts can replace 391-813?
There are 16 known substitutes for 391-813: SMB635885, 391, 391A and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 391-813?
391-813 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-192-0489. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026