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100995R1 — WASHER,SHOULDERED AND RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

100995R1: WASHER,SHOULDERED AND RECESSED.

The WASHER,SHOULDERED AND RECESSED is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 268 OR COPPER ALLOY 260 OVERALL, recess_depth: 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN, hole_diameter: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, recess_diameter: 0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN, shoulder_height: 0.047 INCHES NOMINAL IN, outside_diameter: 0.553 INCHES MINIMUM AND 0.573 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-735-1273, 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
100995R1
NSN: 5310-00-735-1273
FSC: 5310 — Nuts and Washers
CAGE: 89346 — NAVISTAR INTL CORP TRUCK BR OHIO PLANT (USA)
SPECIFICATIONS
materialCOPPER ALLOY 268 OR COPPER ALLOY 260 OVERALL
recess_depth0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
hole_diameter0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
recess_diameter0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN
shoulder_height0.047 INCHES NOMINAL IN
outside_diameter0.553 INCHES MINIMUM AND 0.573 INCHES MAXIMUM IN
special_featuresFLUSH FLANGE 0.016 IN. THK,0.735 IN. MIN,0.745 IN. MAX DIA ATTACHED IN
style_designatorSHOULDERED AND RECESSED
shoulder_diameter0.282 INCHES NOMINAL IN
material_thickness0.016 INCHES NOMINAL IN
material_document_and_classificationQQ-B-613 FED SPEC ALL MATERIAL RESPONSES OR QQ-B-626 FED SPEC ALL MATERIAL RESPONSES OVERALL
NSN5310-00-735-1273
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 100995R1 · 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
•
SHOULDER HEIGHT: 0.047 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SHOULDERED AND RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-613 FED SPEC ALL MATERIAL RESPONSES OR QQ-B-626 FED SPEC ALL MATERIAL RESPONSES OVERALL
•
OUTSIDE DIAMETER: 0.553 INCHES MINIMUM AND 0.573 INCHES MAXIMUM IN
•
RECESS DEPTH: 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.016 INCHES NOMINAL IN
•
SHOULDER DIAMETER: 0.282 INCHES NOMINAL IN
•
RECESS DIAMETER: 0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SHOULDER HEIGHT0.047 INCHES NOMINAL IN
STYLE DESIGNATORSHOULDERED AND RECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-613 FED SPEC ALL MATERIAL RESPONSES OR QQ-B-626 FED SPEC ALL MATERIAL RESPONSES OVERALL
OUTSIDE DIAMETER0.553 INCHES MINIMUM AND 0.573 INCHES MAXIMUM IN
RECESS DEPTH0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
MATERIAL THICKNESS0.016 INCHES NOMINAL IN
SHOULDER DIAMETER0.282 INCHES NOMINAL IN
RECESS DIAMETER0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN
SPECIAL FEATURESFLUSH FLANGE 0.016 IN. THK,0.735 IN. MIN,0.745 IN. MAX DIA ATTACHED IN
MATERIALCOPPER ALLOY 268 OR COPPER ALLOY 260 OVERALL
SUBSTITUTES & CROSS-REFERENCES 5
192253Reference document
Same NSN cross-reference
Reference document — Secondary reference
7351273Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1053K1Reference document
Same NSN cross-reference
Reference document — Secondary reference
5310007351273Reference document
Same NSN cross-reference
Reference document — Secondary reference
800865Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 100995R1?
100995R1 is a WASHER,SHOULDERED AND RECESSED.
What parts can replace 100995R1?
There are 5 known substitutes for 100995R1: 192253, 7351273, 1053K1 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 100995R1?
100995R1 is cataloged in the U.S. Government catalog under NSN 5310-00-735-1273. 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.