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30F38475-4 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

30F38475-4: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.318 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN, outside_diameter: 0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN, style_designator: KEY, material_thickness: 0.030 INCHES NOMINAL IN, internal_prebent_key_width: 0.087 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-478-4838, 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
30F38475-4
NSN: 5310-00-478-4838
FSC: 5310 — Nuts and Washers
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.318 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
outside_diameter0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN
style_designatorKEY
material_thickness0.030 INCHES NOMINAL IN
external_key_quantity9
internal_prebent_key_width0.087 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN
external_straight_key_width0.087 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN
internal_prebent_key_length0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
overall_distance_including_keys0.670 INCHES MINIMUM AND 0.720 INCHES MAXIMUM IN
NSN5310-00-478-4838
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 30F38475-4 · 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 PREBENT KEY WIDTH: 0.087 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN
•
OVERALL DISTANCE INCLUDING KEYS: 0.670 INCHES MINIMUM AND 0.720 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: KEY
•
OUTSIDE DIAMETER: 0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.030 INCHES NOMINAL IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.087 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN
•
EXTERNAL KEY QUANTITY: 9
•
INTERNAL PREBENT KEY LENGTH: 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
INTERNAL PREBENT KEY WIDTH0.087 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS0.670 INCHES MINIMUM AND 0.720 INCHES MAXIMUM IN
STYLE DESIGNATORKEY
OUTSIDE DIAMETER0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN
MATERIAL THICKNESS0.030 INCHES NOMINAL IN
EXTERNAL STRAIGHT KEY WIDTH0.087 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY9
INTERNAL PREBENT KEY LENGTH0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
HOLE DIAMETER0.318 INCHES MINIMUM AND 0.328 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 30F38475-4?
30F38475-4 is a WASHER,KEY.
What is the NSN for 30F38475-4?
30F38475-4 is cataloged in the U.S. Government catalog under NSN 5310-00-478-4838. 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.