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7954539-1 — WASHER,SHOULDERED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

7954539-1: WASHER,SHOULDERED.

The WASHER,SHOULDERED is a the manufacturer industrial component. Key specifications include hole_diameter: 2.755 INCHES MINIMUM AND 2.760 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES TOP, shoulder_height: 0.064 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN, outside_diameter: 4.219 INCHES NOMINAL IN, special_features: TOP PORTION SHOULDER DIA 3.125 IN. AND 0.018 IN.

DEEP IN, style_designator: SHOULDERED. This part is cataloged in the U.S. Government catalog under NSN 5310-01-138-5516, 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
7954539-1
NSN: 5310-01-138-5516
FSC: 5310 — Nuts and Washers
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
hole_diameter2.755 INCHES MINIMUM AND 2.760 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES TOP
shoulder_height0.064 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN
outside_diameter4.219 INCHES NOMINAL IN
special_featuresTOP PORTION SHOULDER DIA 3.125 IN. AND 0.018 IN. DEEP IN
style_designatorSHOULDERED
shoulder_diameter3.484 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN
material_thickness0.087 INCHES MINIMUM AND 0.091 INCHES MAXIMUM IN
NSN5310-01-138-5516
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 7954539-1 · 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: 63.0 MICROINCHES SHOULDER FACE
•
SHOULDER HEIGHT: 0.064 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SHOULDERED
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A108 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A108 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A108 ASSN STD 3RD MATERIAL RESPONSE OR ASTM A108 ASSN STD 4TH MATERIAL RESPONSE OR ASTM A108 ASSN STD 5TH MATERIAL RESPONSE OR ASTM A513 ASSN STD 5TH MATERIAL RESPONSE OR ASTM A519 ASSN STD 5TH MATERIAL RESPONSE OR ASTM A513 ASSN STD 6TH MATERIAL RESPONSE OR ASTM A513 ASSN STD 7TH MATERIAL RESPONSE OR ASTM A108 ASSN STD 8TH MATERIAL RESPONSE OR ASTM A512 ASSN STD 8TH MATERIAL RESPONSE OR ASTM A513 ASSN STD 8TH MATERIAL RESPONSE OR ASTM A519 ASSN STD 8TH MATERIAL RESPONSE OR ASTM A513 ASSN STD 9TH MATERIAL RESPONSE OR ASTM A519 ASSN STD 9TH MATERIAL RESPONSE OR ASTM A108 ASSN STD 10TH MATERIAL RESPONSE OR ASTM A108 ASSN STD 11TH MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 4.219 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.087 INCHES MINIMUM AND 0.091 INCHES MAXIMUM IN
•
SHOULDER DIAMETER: 3.484 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES SHOULDER FACE
SURFACE FINISH63.0 MICROINCHES TOP
SHOULDER HEIGHT0.064 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN
STYLE DESIGNATORSHOULDERED
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A108 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A108 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A108 ASSN STD 3RD MATERIAL RESPONSE OR ASTM A108 ASSN STD 4TH MATERIAL RESPONSE OR ASTM A108 ASSN STD 5TH MATERIAL RESPONSE OR ASTM A513 ASSN STD 5TH MATERIAL RESPONSE OR ASTM A519 ASSN STD 5TH MATERIAL RESPONSE OR ASTM A513 ASSN STD 6TH MATERIAL RESPONSE OR ASTM A513 ASSN STD 7TH MATERIAL RESPONSE OR ASTM A108 ASSN STD 8TH MATERIAL RESPONSE OR ASTM A512 ASSN STD 8TH MATERIAL RESPONSE OR ASTM A513 ASSN STD 8TH MATERIAL RESPONSE OR ASTM A519 ASSN STD 8TH MATERIAL RESPONSE OR ASTM A513 ASSN STD 9TH MATERIAL RESPONSE OR ASTM A519 ASSN STD 9TH MATERIAL RESPONSE OR ASTM A108 ASSN STD 10TH MATERIAL RESPONSE OR ASTM A108 ASSN STD 11TH MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER4.219 INCHES NOMINAL IN
MATERIAL THICKNESS0.087 INCHES MINIMUM AND 0.091 INCHES MAXIMUM IN
SHOULDER DIAMETER3.484 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN
SPECIAL FEATURESTOP PORTION SHOULDER DIA 3.125 IN. AND 0.018 IN. DEEP IN
MATERIALSTEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL COMP 1022 OR STEEL COMP 1023 OR STEEL COMP 1524 OR STEEL COMP 1025 OR STEEL COMP 1026 OR STEEL COMP 1117 OR STEEL COMP 1118 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7954539-1?
7954539-1 is a WASHER,SHOULDERED.
What is the NSN for 7954539-1?
7954539-1 is cataloged in the U.S. Government catalog under NSN 5310-01-138-5516. 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.