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Technical Data Sheet
PartsTable / COMPONENT / US1003
US1003 ✓ 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

HOLDER,ELECTRICAL CONTACT BRUSH. Key specifications include material: COPPER ALLOY BOX, inside_width: 0.516 INCHES NOMINAL IN, inside_length: 0.750 INCHES NOMINAL IN, overall_width: 0.688 INCHES NOMINAL IN, terminal_type: SCREW, overall_length: 1.438 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5977-00-366-8341, 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
US1003
NSN: 5977-00-366-8341
FSC: 5977
CAGE: 01425 — LOUIS ALLIS CO THE THIS COMPANY HAS GONE BANKRUPT AND HAS BEEN PURCHASED BY 3 COMPANIES (USA)
SPECIFICATIONS
materialCOPPER ALLOY BOX
inside_width0.516 INCHES NOMINAL IN
inside_length0.750 INCHES NOMINAL IN
overall_width0.688 INCHES NOMINAL IN
terminal_typeSCREW
overall_length1.438 INCHES NOMINAL IN
inside_thickness0.266 INCHES NOMINAL IN
style_designatorRECTANGLE
mounting_facilityUNTHREADED HOLES
overall_thickness2.125 INCHES NOMINAL IN
terminal_quantity1
brush_spring_adjustabilityADJUSTABLE
NSN5977-00-366-8341
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available HOLDER,ELECTRICAL CONTACT BRUSH TITLE COMPONENT PN US1003 MFR HOLDER,ELECTRICAL CONT
KEY FEATURES
•
TERMINAL QUANTITY: 1
•
INSIDE WIDTH: 0.516 INCHES NOMINAL IN
•
STYLE DESIGNATOR: RECTANGLE
•
MOUNTING FACILITY: UNTHREADED HOLES
•
INSIDE LENGTH: 0.750 INCHES NOMINAL IN
•
OVERALL THICKNESS: 2.125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
TERMINAL QUANTITY1
INSIDE WIDTH0.516 INCHES NOMINAL IN
STYLE DESIGNATORRECTANGLE
MOUNTING FACILITYUNTHREADED HOLES
OVERALL WIDTH0.688 INCHES NOMINAL IN
INSIDE LENGTH0.750 INCHES NOMINAL IN
OVERALL THICKNESS2.125 INCHES NOMINAL IN
OVERALL LENGTH1.438 INCHES NOMINAL IN
BRUSH PRESSURE SPRING TYPE ACCOMMODATEDHELICAL TORSION
INSIDE THICKNESS0.266 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
MIL-S-25879Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-25879Interchangeable
interchangeable cross-reference
interchangeable
SA-521A/A W/O MTGInterchangeable
interchangeable cross-reference
interchangeable
S2479Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is US1003?
US1003 is a HOLDER,ELECTRICAL CONTACT BRUSH.
What parts can replace US1003?
There are 4 known substitutes for US1003: MIL-S-25879, MIL-DTL-25879, SA-521A/A W/O MTG and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for US1003?
US1003 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5977-00-366-8341. 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