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Technical Data Sheet
PartsTable / COMPONENT / 638977
638977 ✓ 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 BLOCK,WIRING is a the manufacturer industrial component. Key specifications include angle: 36.0 DEGREES, shape: ROUND, height: 0.231 INCHES NOMINAL IN, diameter: 0.7580 INCHES NOMINAL IN, material: STEEL OVERALL, nut_type: SELF-LOCKING HEXAGON. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2590-00-621-6322, 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
638977
NSN: 2590-00-621-6322
FSC: 2590
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
angle36.0 DEGREES
shapeROUND
height0.231 INCHES NOMINAL IN
diameter0.7580 INCHES NOMINAL IN
materialSTEEL OVERALL
nut_typeSELF-LOCKING HEXAGON
band_width1.500 INCHES NOMINAL IN
body_styleCYLINDRICAL BUSHING MOUNTED
lens_colorRED
root_width1.500 INCHES NOMINAL IN
body_length1.375 INCHES NOMINAL IN
flat_height0.090 INCHES NOMINAL IN
NSN2590-00-621-6322
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BLOCK,WIRING TITLE COMPONENT PN 638977 MFR BLOCK,WIRING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
15500Interchangeable
interchangeable cross-reference
interchangeable
16823Interchangeable
interchangeable cross-reference
interchangeable
295-12XAInterchangeable
interchangeable cross-reference
interchangeable
276574R91Interchangeable
interchangeable cross-reference
interchangeable
B1212ANG25Interchangeable
interchangeable cross-reference
interchangeable
112-F2-AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 638977?
638977 is a BLOCK,WIRING.
What parts can replace 638977?
There are 18 known substitutes for 638977: 15500, 16823, 295-12XA and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 638977?
638977 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2590-00-621-6322. 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