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5310PL1256791 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5310PL1256791: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 1.013 INCHES NOMINAL IN, outside_diameter: 1.781 INCHES NOMINAL IN, style_designator: KEY, material_thickness: 0.100 INCHES NOMINAL IN, external_straight_key_width: 0.600 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-397-4485, 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
5310PL1256791
NSN: 5310-00-397-4485
FSC: 5310 — Nuts and Washers
CAGE: 9009H — JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX (POL)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter1.013 INCHES NOMINAL IN
outside_diameter1.781 INCHES NOMINAL IN
style_designatorKEY
material_thickness0.100 INCHES NOMINAL IN
external_key_quantity5
internal_key_quantity1
external_straight_key_width0.600 INCHES NOMINAL IN
internal_straight_key_width0.300 INCHES NOMINAL IN
overall_distance_including_keys3.407 INCHES NOMINAL IN
distance_from_centerline_to_top_of_internal_key0.351 INCHES NOMINAL IN
NSN5310-00-397-4485
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5310PL1256791 · 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 STRAIGHT KEY WIDTH: 0.300 INCHES NOMINAL IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 0.351 INCHES NOMINAL IN
•
OVERALL DISTANCE INCLUDING KEYS: 3.407 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KEY
•
OUTSIDE DIAMETER: 1.781 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.100 INCHES NOMINAL IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.600 INCHES NOMINAL IN
•
EXTERNAL KEY QUANTITY: 5
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.300 INCHES NOMINAL IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY0.351 INCHES NOMINAL IN
OVERALL DISTANCE INCLUDING KEYS3.407 INCHES NOMINAL IN
STYLE DESIGNATORKEY
OUTSIDE DIAMETER1.781 INCHES NOMINAL IN
MATERIAL THICKNESS0.100 INCHES NOMINAL IN
EXTERNAL STRAIGHT KEY WIDTH0.600 INCHES NOMINAL IN
EXTERNAL KEY QUANTITY5
MATERIALSTEEL OVERALL
INTERNAL KEY QUANTITY1
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
W104060Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
CE-W104060Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5310PL1256791?
5310PL1256791 is a WASHER,KEY.
What parts can replace 5310PL1256791?
There are 2 known substitutes for 5310PL1256791: W104060, CE-W104060. Substitute compatibility should be verified for your specific system.
What is the NSN for 5310PL1256791?
5310PL1256791 is cataloged in the U.S. Government catalog under NSN 5310-00-397-4485. 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.