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Technical Data Sheet
PartsTable / COMPONENT / 377 1/2-20 UNF
377 1/2-20 UNF ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The 377 1/2-20 UNF is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5136-00-237-8274, 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
377 1/2-20 UNF
NSN: 5136-00-237-8274
FSC: 5136
CAGE: 60NQ9 — GREENFIELD INDUSTRIES INC (USA)
SPECIFICATIONS
Part Number377 1/2-20 UNF
NSN5136-00-237-8274
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available 377 1/2-20 UNF TITLE COMPONENT PN 377 1/2-20 UNF MFR 377 1/2-20 UNF
KEY FEATURES
•
THREAD DIRECTION: RIGHT-HAND
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: SOLID HEXAGON NUT
•
THICKNESS: 0.500 INCHES NOMINAL IN
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 0.500-20 UNF
•
WIDTH ACROSS FLATS: 1.062 INCHES NOMINAL IN
•
THREAD PITCH DIAMETERS: +0.4598 TO 0.4675 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
MATERIALSTEEL OVERALL
STYLE DESIGNATORSOLID HEXAGON NUT
THICKNESS0.500 INCHES NOMINAL IN
THREAD SIZE AND SERIES/TYPE DESIGNATOR0.500-20 UNF
WIDTH ACROSS FLATS1.062 INCHES NOMINAL IN
THREAD PITCH DIAMETERS+0.4598 TO 0.4675 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
GGG-D-296 TY3SEBInterchangeable
interchangeable cross-reference
interchangeable
377 1/4-28 UNFInterchangeable
interchangeable cross-reference
interchangeable
24110Interchangeable
interchangeable cross-reference
interchangeable
C65633Interchangeable
interchangeable cross-reference
interchangeable
7275Interchangeable
interchangeable cross-reference
interchangeable
350-RTInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 377 1/2-20 UNF?
377 1/2-20 UNF is a 377 1/2-20 UNF.
What parts can replace 377 1/2-20 UNF?
There are 22 known substitutes for 377 1/2-20 UNF: GGG-D-296 TY3SEB, 377 1/4-28 UNF, 24110 and 19 more. Substitute compatibility should be verified for your specific system.
Is 377 1/2-20 UNF still available?
377 1/2-20 UNF is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026