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A51B61052-19 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

A51B61052-19: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.626 INCHES MINIMUM AND 0.636 INCHES MAXIMUM IN, outside_diameter: 0.830 INCHES NOMINAL IN, style_designator: KEY, surface_treatment: CADMIUM OVERALL, material_thickness: 0.045 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-230-5196, 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
A51B61052-19
NSN: 5310-00-230-5196
FSC: 5310 — Nuts and Washers
CAGE: 0BVP9 — CAPY MACHINE SHOP INC. DBA CAPY MACHINE SHOP INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.626 INCHES MINIMUM AND 0.636 INCHES MAXIMUM IN
outside_diameter0.830 INCHES NOMINAL IN
style_designatorKEY
surface_treatmentCADMIUM OVERALL
material_thickness0.045 INCHES NOMINAL IN
external_key_quantity7
external_straight_key_width0.210 INCHES NOMINAL IN
overall_distance_including_keys1.252 INCHES NOMINAL IN
material_document_and_classificationQQ-S-698,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
surface_treatment_document_and_classificationMIL-C-8837,TYPE 2 CLASS1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-230-5196
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A51B61052-19 · 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: MIL-C-8837,TYPE 2 CLASS1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
OVERALL DISTANCE INCLUDING KEYS: 1.252 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-698,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.830 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.045 INCHES NOMINAL IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.210 INCHES NOMINAL IN
•
EXTERNAL KEY QUANTITY: 7
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-8837,TYPE 2 CLASS1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
OVERALL DISTANCE INCLUDING KEYS1.252 INCHES NOMINAL IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-698,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.830 INCHES NOMINAL IN
MATERIAL THICKNESS0.045 INCHES NOMINAL IN
EXTERNAL STRAIGHT KEY WIDTH0.210 INCHES NOMINAL IN
EXTERNAL KEY QUANTITY7
SURFACE TREATMENTCADMIUM OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
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 A51B61052-19?
A51B61052-19 is a WASHER,KEY.
What is the NSN for A51B61052-19?
A51B61052-19 is cataloged in the U.S. Government catalog under NSN 5310-00-230-5196. 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.