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900873-05 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

900873-05: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, hole_diameter: 0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN, outside_diameter: 0.239 INCHES NOMINAL IN, special_features: DYED DEEP YELLOW, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: CADMIUM AND CHROMATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-184-8978, 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
900873-05
NSN: 5310-00-184-8978
FSC: 5310 — Nuts and Washers
CAGE: 90536 — LOCKHEED MARTIN CORP DBA LOCKHEED MARTIN DIV MST - EAGAN (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
hole_diameter0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN
outside_diameter0.239 INCHES NOMINAL IN
special_featuresDYED DEEP YELLOW
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
material_thickness0.025 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
departure_from_cited_designatorAS MODIFIED BY MATERIAL SPEC
NSN5310-00-184-8978
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 900873-05 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
OUTSIDE DIAMETER: 0.239 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.025 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
•
DEPARTURE FROM CITED DESIGNATOR: AS MODIFIED BY MATERIAL SPEC
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
MATERIAL: COPPER ALLOY OVERALL
•
HOLE DIAMETER: 0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
OUTSIDE DIAMETER0.239 INCHES NOMINAL IN
MATERIAL THICKNESS0.025 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY MATERIAL SPEC
SPECIAL FEATURESDYED DEEP YELLOW
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
MATERIALCOPPER ALLOY OVERALL
HOLE DIAMETER0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 3
310-0078-000Reference document
Same NSN cross-reference
Reference document — Secondary reference
AN935B6LSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
6026-1085-6Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 900873-05?
900873-05 is a WASHER,LOCK.
What parts can replace 900873-05?
There are 3 known substitutes for 900873-05: 310-0078-000, AN935B6L, 6026-1085-6. Substitute compatibility should be verified for your specific system.
What is the NSN for 900873-05?
900873-05 is cataloged in the U.S. Government catalog under NSN 5310-00-184-8978. 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.