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101A783BC-2 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

101A783BC-2: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.812 INCHES NOMINAL IN, style_designator: KEY, material_thickness: 0.078 INCHES NOMINAL IN, external_straight_key_width: 1.000 INCHES NOMINAL IN, material_document_and_classification: QQ-S-766 CL 410 COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-393-8553, 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-2
NSN: 5310-01-393-8553
FSC: 5310 — Nuts and Washers
CAGE: 30828 — KROBACH MFG. CORP. DBA KROBACH MANUFACTURING CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.812 INCHES NOMINAL IN
style_designatorKEY
material_thickness0.078 INCHES NOMINAL IN
external_straight_key_width1.000 INCHES NOMINAL IN
material_document_and_classificationQQ-S-766 CL 410 COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
distance_from_centerline_to_end_of_key1.125 INCHES NOMINAL IN
NSN5310-01-393-8553
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 101A783BC-2 · 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
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-766 CL 410 COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL THICKNESS: 0.078 INCHES NOMINAL IN
•
EXTERNAL STRAIGHT KEY WIDTH: 1.000 INCHES NOMINAL IN
•
DISTANCE FROM CENTERLINE TO END OF KEY: 1.125 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 0.812 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766 CL 410 COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS0.078 INCHES NOMINAL IN
EXTERNAL STRAIGHT KEY WIDTH1.000 INCHES NOMINAL IN
DISTANCE FROM CENTERLINE TO END OF KEY1.125 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

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 101A783BC-2?
101A783BC-2 is a WASHER,KEY.
What is the NSN for 101A783BC-2?
101A783BC-2 is cataloged in the U.S. Government catalog under NSN 5310-01-393-8553. 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.