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5310PL0721337 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5310PL0721337: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 321 OVERALL, hole_diameter: 4.130 INCHES MINIMUM AND 4.140 INCHES MAXIMUM IN, outside_diameter: 4.310 INCHES MINIMUM AND 4.320 INCHES MAXIMUM IN, style_designator: KEY, material_thickness: 0.056 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN, external_key_quantity: 30. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-367-8709, 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
5310PL0721337
NSN: 5310-00-367-8709
FSC: 5310 — Nuts and Washers
CAGE: 9009H — JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX (POL)
SPECIFICATIONS
materialSTEEL COMP 321 OVERALL
hole_diameter4.130 INCHES MINIMUM AND 4.140 INCHES MAXIMUM IN
outside_diameter4.310 INCHES MINIMUM AND 4.320 INCHES MAXIMUM IN
style_designatorKEY
material_thickness0.056 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN
external_key_quantity30
internal_key_quantity31
external_straight_key_width0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
internal_straight_key_width0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
overall_distance_including_keys4.590 INCHES MINIMUM AND 4.610 INCHES MAXIMUM IN
material_document_and_classificationAMS5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
distance_from_centerline_to_top_of_internal_key3.910 INCHES MINIMUM AND 3.930 INCHES MAXIMUM IN
NSN5310-00-367-8709
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5310PL0721337 · 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: 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 3.910 INCHES MINIMUM AND 3.930 INCHES MAXIMUM IN
•
OVERALL DISTANCE INCLUDING KEYS: 4.590 INCHES MINIMUM AND 4.610 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 4.310 INCHES MINIMUM AND 4.320 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.056 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY3.910 INCHES MINIMUM AND 3.930 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS4.590 INCHES MINIMUM AND 4.610 INCHES MAXIMUM IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER4.310 INCHES MINIMUM AND 4.320 INCHES MAXIMUM IN
MATERIAL THICKNESS0.056 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN
EXTERNAL STRAIGHT KEY WIDTH0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY30
MATERIALSTEEL COMP 321 OVERALL
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 1
4016982Reference 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 5310PL0721337?
5310PL0721337 is a WASHER,KEY.
What parts can replace 5310PL0721337?
There is 1 known substitute for 5310PL0721337: 4016982. Substitute compatibility should be verified for your specific system.
What is the NSN for 5310PL0721337?
5310PL0721337 is cataloged in the U.S. Government catalog under NSN 5310-00-367-8709. 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.