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805057 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

805057: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1008 OVERALL, hole_diameter: 0.390 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN, hardness_rating: 52.0 ROCKWELL B MINIMUM OR 64.0 ROCKWELL B MAXIMUM, outside_diameter: 0.672 INCHES MINIMUM AND 0.703 INCHES MAXIMUM IN, style_designator: KEY, surface_treatment: CADMIUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-010-3320, 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
805057
NSN: 5310-00-010-3320
NIINs: 000103320, 003588344
FSC: 5310 — Nuts and Washers
CAGE: 02280 — AMERICAN HOIST AND DERRICK CO
SPECIFICATIONS
materialSTEEL COMP 1008 OVERALL
hole_diameter0.390 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
hardness_rating52.0 ROCKWELL B MINIMUM OR 64.0 ROCKWELL B MAXIMUM
outside_diameter0.672 INCHES MINIMUM AND 0.703 INCHES MAXIMUM IN
style_designatorKEY
surface_treatmentCADMIUM OVERALL
material_thickness0.047 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
external_prebent_key_length0.203 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
external_straight_key_width0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
external_straight_key_length0.141 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
overall_distance_including_keys0.797 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN
material_document_and_classificationAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-010-3320
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 805057 · 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
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
OUTSIDE DIAMETER: 0.586 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.078 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN
•
NONDEFINITIVE SPEC/STD DATA: 2 STYLE AND A CLASS
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
HOLE DIAMETER: 0.318 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
OUTSIDE DIAMETER0.586 INCHES MAXIMUM IN
MATERIAL THICKNESS0.078 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATA2 STYLE AND A CLASS
MATERIALSTEEL CORROSION RESISTING OVERALL
HOLE DIAMETER0.318 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 7
A950Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
5310PL0951123Reference document
Same NSN cross-reference
Reference document — Informative reference only
103320Reference document
Same NSN cross-reference
Reference document — Secondary reference
X2977Reference document
Same NSN cross-reference
Reference document — Secondary reference
X528Reference document
Same NSN cross-reference
Reference document — Secondary reference
X3-500Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 805057?
805057 is a WASHER,KEY.
What parts can replace 805057?
There are 7 known substitutes for 805057: A950, 5310PL0951123, 103320 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 805057?
805057 is cataloged in the U.S. Government catalog under NSN 5310-00-010-3320. This indicates validated use in U.S. government and defense supply chains.
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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.