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7020-92-600-7131 — WASHER,SHOULDERED AND RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

7020-92-600-7131: WASHER,SHOULDERED AND RECESSED.

The WASHER,SHOULDERED AND RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP E4340 OVERALL, recess_angle: 90.0 DEGREES NOMINAL, hole_diameter: 0.7023 INCHES MINIMUM AND 0.7033 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES COUNTERBORE WALL, hardness_rating: 28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM, recess_diameter: 0.060 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-169-3188, 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
7020-92-600-7131
NSN: 5310-01-169-3188
FSC: 5310 — Nuts and Washers
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
materialSTEEL COMP E4340 OVERALL
recess_angle90.0 DEGREES NOMINAL
hole_diameter0.7023 INCHES MINIMUM AND 0.7033 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES COUNTERBORE WALL
hardness_rating28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
recess_diameter0.060 INCHES NOMINAL IN
shoulder_height0.195 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
outside_diameter1.188 INCHES NOMINAL IN
style_designatorSHOULDERED AND RECESSED BOTH SIDES
shoulder_diameter1.0660 INCHES MINIMUM AND 1.0665 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
material_thickness0.050 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
NSN5310-01-169-3188
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 7020-92-600-7131 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SHOULDER HEIGHT: 0.195 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
•
HARDNESS RATING: 28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: SHOULDERED AND RECESSED BOTH SIDES
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5000,COND E4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.188 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES SHOULDER FACE
SURFACE FINISH63.0 MICROINCHES COUNTERBORE WALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SHOULDER HEIGHT0.195 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
HARDNESS RATING28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORSHOULDERED AND RECESSED BOTH SIDES
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000,COND E4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.188 INCHES NOMINAL IN
MATERIAL THICKNESS0.050 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
SHOULDER DIAMETER1.0660 INCHES MINIMUM AND 1.0665 INCHES MAXIMUM IN
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7020-92-600-7131?
7020-92-600-7131 is a WASHER,SHOULDERED AND RECESSED.
What is the NSN for 7020-92-600-7131?
7020-92-600-7131 is cataloged in the U.S. Government catalog under NSN 5310-01-169-3188. 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.