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45058PC7 — WASHER,KEYWAY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

45058PC7: WASHER,KEYWAY.

The WASHER,KEYWAY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 301 OVERALL, outside_diameter: 0.640 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN, special_features: CENTRALLY LOCATED APERTURE 0.157 IN. MIN 0.158 IN.

MAX WIDE,0.270 IN. MIN 0.275 IN. MAX LG IN, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.120 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN, external_keyway_width: 0.187 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN.

This part is cataloged in the U.S. Government catalog under NSN 5310-00-382-6301, 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
45058PC7
NSN: 5310-00-382-6301
FSC: 5310 — Nuts and Washers
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
materialSTEEL COMP 301 OVERALL
outside_diameter0.640 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN
special_featuresCENTRALLY LOCATED APERTURE 0.157 IN. MIN 0.158 IN. MAX WIDE,0.270 IN. MIN 0.275 IN. MAX LG IN
surface_treatmentPASSIVATE OVERALL
material_thickness0.120 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN
external_keyway_width0.187 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN
external_keyway_length0.067 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
material_document_and_classificationQQ-S-766,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-382-6301
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 45058PC7 · 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
•
EXTERNAL KEYWAY WIDTH: 0.187 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-766,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.640 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.120 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL COMP 301 OVERALL
TECHNICAL CHARACTERISTICS
EXTERNAL KEYWAY WIDTH0.187 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.640 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN
MATERIAL THICKNESS0.120 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN
SPECIAL FEATURESCENTRALLY LOCATED APERTURE 0.157 IN. MIN 0.158 IN. MAX WIDE,0.270 IN. MIN 0.275 IN. MAX LG IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 301 OVERALL
EXTERNAL KEYWAY LENGTH0.067 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 2
172958PC7Reference document
Same NSN cross-reference
Reference document — Secondary reference
97267PC17Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 45058PC7?
45058PC7 is a WASHER,KEYWAY.
What parts can replace 45058PC7?
There are 2 known substitutes for 45058PC7: 172958PC7, 97267PC17. Substitute compatibility should be verified for your specific system.
What is the NSN for 45058PC7?
45058PC7 is cataloged in the U.S. Government catalog under NSN 5310-00-382-6301. 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.