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74A400970-2003 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

74A400970-2003: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4340 OVERALL, hole_diameter: 2.385 INCHES NOMINAL IN, outside_diameter: 2.664 INCHES NOMINAL IN, style_designator: KEY, surface_treatment: CADMIUM OVERALL, material_thickness: 0.030 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-476-7010, 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
74A400970-2003
NSN: 5310-01-476-7010
FSC: 5310 — Nuts and Washers
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL COMP 4340 OVERALL
hole_diameter2.385 INCHES NOMINAL IN
outside_diameter2.664 INCHES NOMINAL IN
style_designatorKEY
surface_treatmentCADMIUM OVERALL
material_thickness0.030 INCHES NOMINAL IN
external_key_quantity9
internal_key_quantity2
end_item_identificationF/A 18E/F AIRCRAFT
external_straight_key_width0.980 INCHES NOMINAL IN
internal_straight_key_width0.250 INCHES NOMINAL IN
overall_distance_including_keys2.975 INCHES NOMINAL IN
NSN5310-01-476-7010
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 74A400970-2003 · 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: 0.250 INCHES NOMINAL IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 0.980 INCHES NOMINAL IN
•
OVERALL DISTANCE INCLUDING KEYS: 2.975 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-8844 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 2.664 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.030 INCHES NOMINAL IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.980 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.250 INCHES NOMINAL IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY0.980 INCHES NOMINAL IN
OVERALL DISTANCE INCLUDING KEYS2.975 INCHES NOMINAL IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-8844 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER2.664 INCHES NOMINAL IN
MATERIAL THICKNESS0.030 INCHES NOMINAL IN
EXTERNAL STRAIGHT KEY WIDTH0.980 INCHES NOMINAL IN
EXTERNAL KEY QUANTITY9
SURFACE TREATMENTCADMIUM OVERALL
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 demandDemilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 74A400970-2003?
74A400970-2003 is a WASHER,KEY.
What is the NSN for 74A400970-2003?
74A400970-2003 is cataloged in the U.S. Government catalog under NSN 5310-01-476-7010. 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.