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101A783BC-1 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

101A783BC-1: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.812 INCHES NOMINAL IN, external_prebent_key_width: 1.000 INCHES NOMINAL IN, overall_distance_including_keys: 1.875 INCHES NOMINAL IN, material_document_and_classification: QQ-S-766 CLASS 321 COND A FIN 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-418-5880, 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
101A783BC-1
NSN: 5310-01-418-5880
FSC: 5310 — Nuts and Washers
CAGE: 8FGX3 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORP DBA STEAM & AIR SOLUTIONS DIV CURTISS-WRIGHT STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.812 INCHES NOMINAL IN
external_prebent_key_width1.000 INCHES NOMINAL IN
overall_distance_including_keys1.875 INCHES NOMINAL IN
material_document_and_classificationQQ-S-766 CLASS 321 COND A FIN 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-418-5880
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 101A783BC-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
•
OVERALL DISTANCE INCLUDING KEYS: 1.875 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-766 CLASS 321 COND A FIN 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
EXTERNAL PREBENT KEY WIDTH: 1.000 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 0.812 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DISTANCE INCLUDING KEYS1.875 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766 CLASS 321 COND A FIN 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
EXTERNAL PREBENT KEY WIDTH1.000 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
HOLE DIAMETER0.812 INCHES NOMINAL 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
509E821AFPN16Reference document
Same NSN cross-reference
Reference document — Design control — primary 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 101A783BC-1?
101A783BC-1 is a WASHER,KEY.
What parts can replace 101A783BC-1?
There is 1 known substitute for 101A783BC-1: 509E821AFPN16. Substitute compatibility should be verified for your specific system.
What is the NSN for 101A783BC-1?
101A783BC-1 is cataloged in the U.S. Government catalog under NSN 5310-01-418-5880. 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.