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G374921PC57 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

G374921PC57: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include hole_diameter: 1.193 INCHES MINIMUM AND 1.213 INCHES MAXIMUM IN, hardness_rating: 50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM, outside_diameter: 1.500 INCHES MINIMUM AND 1.515 INCHES MAXIMUM IN, special_features: WASHER STYLE:NO.79;, style_designator: KEY, material_thickness: 0.046 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-186-0965, 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
G374921PC57
NSN: 5310-00-186-0965
FSC: 5310 — Nuts and Washers
CAGE: 72957 — ELLIOTT COMPANY DIV JEANNETTE (USA)
SPECIFICATIONS
materialSTEEL COMP 1115 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OVERALL
hole_diameter1.193 INCHES MINIMUM AND 1.213 INCHES MAXIMUM IN
hardness_rating50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
outside_diameter1.500 INCHES MINIMUM AND 1.515 INCHES MAXIMUM IN
special_featuresWASHER STYLE:NO.79;
style_designatorKEY
material_thickness0.046 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN
external_key_quantity13
end_item_identificationLOGISTGICS SUPPORT VESSEL
external_prebent_key_width0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
internal_prebent_key_width0.156 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
internal_prebent_key_length0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
NSN5310-00-186-0965
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: G374921PC57 · 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
•
INTERNAL PREBENT KEY WIDTH: 0.156 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
•
OVERALL DISTANCE INCLUDING KEYS: 1.922 INCHES MAXIMUM IN
•
HARDNESS RATING: 50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD ALL MATERIAL RESPONSES OVERALL
•
OUTSIDE DIAMETER: 1.500 INCHES MINIMUM AND 1.515 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.046 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN
•
EXTERNAL KEY QUANTITY: 13
TECHNICAL CHARACTERISTICS
INTERNAL PREBENT KEY WIDTH0.156 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS1.922 INCHES MAXIMUM IN
HARDNESS RATING50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD ALL MATERIAL RESPONSES OVERALL
OUTSIDE DIAMETER1.500 INCHES MINIMUM AND 1.515 INCHES MAXIMUM IN
MATERIAL THICKNESS0.046 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY13
INTERNAL PREBENT KEY LENGTH0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
SPECIAL FEATURESWASHER STYLE:NO.79;
SUBSTITUTES & CROSS-REFERENCES 9
D8425PC33Reference document
Same NSN cross-reference
Reference document — Secondary reference
D7974PC36Reference document
Same NSN cross-reference
Reference document — Secondary reference
313151-7Reference document
Same NSN cross-reference
Reference document — Secondary reference
DR2536PC8Reference document
Same NSN cross-reference
Reference document — Secondary reference
D8312PC36Reference document
Same NSN cross-reference
Reference document — Secondary reference
15396-2PC12Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is G374921PC57?
G374921PC57 is a WASHER,KEY.
What parts can replace G374921PC57?
There are 9 known substitutes for G374921PC57: D8425PC33, D7974PC36, 313151-7 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for G374921PC57?
G374921PC57 is cataloged in the U.S. Government catalog under NSN 5310-00-186-0965. 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.