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7020-98-110-2107 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

7020-98-110-2107: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include recess_angle: 90.0 DEGREES NOMINAL, hole_diameter: 0.315 INCHES MINIMUM AND 0.324 INCHES MAXIMUM IN, recess_diameter: 0.396 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN, outside_diameter: 0.727 INCHES MINIMUM AND 0.749 INCHES MAXIMUM IN, style_designator: RECESSED, surface_treatment: CADMIUM AND CHROMATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-340-4649, 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
7020-98-110-2107
NSN: 5310-01-340-4649
FSC: 5310 — Nuts and Washers
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1023 OR STEEL COMP 1524 OR STEEL COMP 1025 OVERALL
recess_angle90.0 DEGREES NOMINAL
hole_diameter0.315 INCHES MINIMUM AND 0.324 INCHES MAXIMUM IN
recess_diameter0.396 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
outside_diameter0.727 INCHES MINIMUM AND 0.749 INCHES MAXIMUM IN
style_designatorRECESSED
surface_treatmentCADMIUM AND CHROMATE OVERALL
material_thickness0.063 INCHES NOMINAL IN
material_document_and_classificationASTM A570 ASSN STD ALL MATERIAL RESPONSES OVERALL
surface_treatment_document_and_classificationQQ-P-416,TY2,CL2 FED SPEC ALL TREATMENT RESPONSES OVERALL
NSN5310-01-340-4649
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 7020-98-110-2107 · 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 TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY2,CL2 FED SPEC ALL TREATMENT RESPONSES OVERALL
•
STYLE DESIGNATOR: RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A570 ASSN STD ALL MATERIAL RESPONSES OVERALL
•
OUTSIDE DIAMETER: 0.727 INCHES MINIMUM AND 0.749 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.063 INCHES NOMINAL IN
•
RECESS DIAMETER: 0.396 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
MATERIAL: STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1023 OR STEEL COMP 1524 OR STEEL COMP 1025 OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY2,CL2 FED SPEC ALL TREATMENT RESPONSES OVERALL
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A570 ASSN STD ALL MATERIAL RESPONSES OVERALL
OUTSIDE DIAMETER0.727 INCHES MINIMUM AND 0.749 INCHES MAXIMUM IN
MATERIAL THICKNESS0.063 INCHES NOMINAL IN
RECESS DIAMETER0.396 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
MATERIALSTEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1023 OR STEEL COMP 1524 OR STEEL COMP 1025 OVERALL
HOLE DIAMETER0.315 INCHES MINIMUM AND 0.324 INCHES MAXIMUM IN
RECESS ANGLE90.0 DEGREES NOMINAL
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 7020-98-110-2107?
7020-98-110-2107 is a WASHER,RECESSED.
What is the NSN for 7020-98-110-2107?
7020-98-110-2107 is cataloged in the U.S. Government catalog under NSN 5310-01-340-4649. 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.