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481737 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

481737: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, hole_diameter: 0.200 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN, surface_finish: 32.0 MICROINCHES TOP, outside_diameter: 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN, split_key_length: 0.150 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN, style_designator: KEY. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-073-1601, 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
481737
NSN: 5310-00-073-1601
FSC: 5310 — Nuts and Washers
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
hole_diameter0.200 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
surface_finish32.0 MICROINCHES TOP
outside_diameter0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
split_key_length0.150 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN
style_designatorKEY
material_thickness0.027 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
external_key_quantity4
external_prebent_key_angle20.0 DEGREES MINIMUM AND 40.0 DEGREES MAXIMUM
external_prebent_key_width0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN
external_tapered_key_width0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
angle_between_external_keys38.0 DEGREES MINIMUM AND 42.0 DEGREES MAXIMUM
NSN5310-00-073-1601
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 481737 · 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
•
SURFACE FINISH: 32.0 MICROINCHES TOP
•
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY: 0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
•
SPLIT KEY LENGTH: 0.150 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN
•
OVERALL DISTANCE INCLUDING KEYS: 0.640 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE 30321 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
•
EXTERNAL TAPERED KEY WIDTH: 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES TOP
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
SPLIT KEY LENGTH0.150 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS0.640 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONSAE 30321 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
EXTERNAL TAPERED KEY WIDTH0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
MATERIAL THICKNESS0.027 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY4
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 481737?
481737 is a WASHER,KEY.
What is the NSN for 481737?
481737 is cataloged in the U.S. Government catalog under NSN 5310-00-073-1601. 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.