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A742B3800 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

A742B3800: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OVERALL, hole_diameter: 0.520 INCHES MINIMUM AND 0.520 INCHES MINIMUM AND 0.530 INCHES MAXIMUM0.530 INCHES MAXIMUM IN, overall_height: 0.115 INCHES MINIMUM AND 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM0.135 INCHES MAXIMUM IN, outside_diameter: 0.780 INCHES MINIMUM AND 0.780 INCHES MINIMUM AND 0.800 INCHES MAXIMUM0.800 INCHES MAXIMUM IN, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.008 INCHES NOMINAL0.008 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-030-8422, 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
A742B3800
NSN: 5310-01-030-8422
FSC: 5310 — Nuts and Washers
CAGE: 70318 — ALLMETAL SCREW PRODUCTS CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OVERALL
hole_diameter0.520 INCHES MINIMUM AND 0.520 INCHES MINIMUM AND 0.530 INCHES MAXIMUM0.530 INCHES MAXIMUM IN
overall_height0.115 INCHES MINIMUM AND 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM0.135 INCHES MAXIMUM IN
outside_diameter0.780 INCHES MINIMUM AND 0.780 INCHES MINIMUM AND 0.800 INCHES MAXIMUM0.800 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
material_thickness0.008 INCHES NOMINAL0.008 INCHES NOMINAL IN
material_document_and_classificationAMS 5516 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-030-8422
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A742B3800 · 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-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5516 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.780 INCHES MINIMUM AND 0.780 INCHES MINIMUM AND 0.800 INCHES MAXIMUM0.800 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.008 INCHES NOMINAL0.008 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL COMP 302 OVERALL
•
HOLE DIAMETER: 0.520 INCHES MINIMUM AND 0.520 INCHES MINIMUM AND 0.530 INCHES MAXIMUM0.530 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.115 INCHES MINIMUM AND 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM0.135 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5516 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.780 INCHES MINIMUM AND 0.780 INCHES MINIMUM AND 0.800 INCHES MAXIMUM0.800 INCHES MAXIMUM IN
MATERIAL THICKNESS0.008 INCHES NOMINAL0.008 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 302 OVERALL
HOLE DIAMETER0.520 INCHES MINIMUM AND 0.520 INCHES MINIMUM AND 0.530 INCHES MAXIMUM0.530 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 1
SM-C-771381Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
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 A742B3800?
A742B3800 is a WASHER,SPRING TENSION.
What parts can replace A742B3800?
There is 1 known substitute for A742B3800: SM-C-771381. Substitute compatibility should be verified for your specific system.
What is the NSN for A742B3800?
A742B3800 is cataloged in the U.S. Government catalog under NSN 5310-01-030-8422. 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.