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993342-2 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

993342-2: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 AND STEEL COMP 304 OVERALL, hole_diameter: 0.470 INCHES MINIMUM AND 0.480 INCHES MAXIMUM IN, outside_diameter: 0.703 INCHES MINIMUM AND 0.735 INCHES MAXIMUM IN, style_designator: KEY, surface_treatment: CADMIUM OVERALL, material_thickness: 0.037 INCHES MINIMUM AND 0.043 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-050-7147, 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
993342-2
NSN: 5310-01-050-7147
FSC: 5310 — Nuts and Washers
CAGE: 82577 — RAYTHEON COMPANY DBA RAYTHEON (USA)
SPECIFICATIONS
materialSTEEL COMP 303 AND STEEL COMP 304 OVERALL
hole_diameter0.470 INCHES MINIMUM AND 0.480 INCHES MAXIMUM IN
outside_diameter0.703 INCHES MINIMUM AND 0.735 INCHES MAXIMUM IN
style_designatorKEY
surface_treatmentCADMIUM OVERALL
material_thickness0.037 INCHES MINIMUM AND 0.043 INCHES MAXIMUM IN
external_prebent_key_width0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
external_prebent_key_length0.050 INCHES MAXIMUM IN
internal_straight_key_width0.059 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
overall_distance_including_keys0.739 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES OVERALL
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5310-01-050-7147
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 993342-2 · 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
•
INTERNAL STRAIGHT KEY WIDTH: 0.059 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 0.217 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY: 0.352 INCHES MINIMUM AND 0.368 INCHES MAXIMUM IN
•
EXTERNAL PREBENT KEY LENGTH: 0.050 INCHES MAXIMUM IN
•
OVERALL DISTANCE INCLUDING KEYS: 0.739 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.059 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY0.217 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY0.352 INCHES MINIMUM AND 0.368 INCHES MAXIMUM IN
EXTERNAL PREBENT KEY LENGTH0.050 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS0.739 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
OUTSIDE DIAMETER0.703 INCHES MINIMUM AND 0.735 INCHES MAXIMUM IN
MATERIAL THICKNESS0.037 INCHES MINIMUM AND 0.043 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 2
A380-12-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
WC1234-2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 993342-2?
993342-2 is a WASHER,KEY.
What parts can replace 993342-2?
There are 2 known substitutes for 993342-2: A380-12-2, WC1234-2. Substitute compatibility should be verified for your specific system.
What is the NSN for 993342-2?
993342-2 is cataloged in the U.S. Government catalog under NSN 5310-01-050-7147. 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.