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PB53840-1 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

PB53840-1: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 170 OVERALL, hole_diameter: 1.230 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN, overall_height: 0.078 INCHES NOMINAL IN, outside_diameter: 1.280 INCHES MINIMUM AND 1.290 INCHES MAXIMUM IN, special_features: SLOT THRU OUTER CIRCUMFERENCE, surface_treatment: TIN OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-487-7168, 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
PB53840-1
NSN: 5310-00-487-7168
FSC: 5310 — Nuts and Washers
CAGE: 55972 — HONEYWELL INTL INC DEFENSE AVIONICS SYSTEMS (USA)
SPECIFICATIONS
materialCOPPER ALLOY 170 OVERALL
hole_diameter1.230 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN
overall_height0.078 INCHES NOMINAL IN
outside_diameter1.280 INCHES MINIMUM AND 1.290 INCHES MAXIMUM IN
special_featuresSLOT THRU OUTER CIRCUMFERENCE
surface_treatmentTIN OVERALL
material_thickness0.011 INCHES MINIMUM AND 0.013 INCHES MAXIMUM IN
material_document_and_classificationQQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-487-7168
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: PB53840-1 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.280 INCHES MINIMUM AND 1.290 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.011 INCHES MINIMUM AND 0.013 INCHES MAXIMUM IN
•
SURFACE TREATMENT: TIN OVERALL
•
MATERIAL: COPPER ALLOY 170 OVERALL
•
HOLE DIAMETER: 1.230 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.078 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.280 INCHES MINIMUM AND 1.290 INCHES MAXIMUM IN
MATERIAL THICKNESS0.011 INCHES MINIMUM AND 0.013 INCHES MAXIMUM IN
SPECIAL FEATURESSLOT THRU OUTER CIRCUMFERENCE
SURFACE TREATMENTTIN OVERALL
MATERIALCOPPER ALLOY 170 OVERALL
HOLE DIAMETER1.230 INCHES MINIMUM AND 1.240 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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is PB53840-1?
PB53840-1 is a WASHER,SPRING TENSION.
What is the NSN for PB53840-1?
PB53840-1 is cataloged in the U.S. Government catalog under NSN 5310-00-487-7168. 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.