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AN280H404 — KEY,WOODRUFF

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

AN280H404: KEY,WOODRUFF.

The KEY,WOODRUFF is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8630 OVERALL, thickness: 0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN, key_height: 0.198 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN, circle_diameter: 0.500 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN, hardness_rating: 26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM OVERALL, style_designator: ROUND BOTTOM. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-230-6248, 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
AN280H404
NSN: 5315-00-230-6248
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
materialSTEEL COMP 8630 OVERALL
thickness0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
key_height0.198 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
circle_diameter0.500 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
hardness_rating26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM OVERALL
style_designatorROUND BOTTOM
starting_edge_shapeROUND
key_size_designationWOODRUFF 3
starting_edge_radius0.008 INCHES MINIMUM AND 0.012 INCHES MAXIMUM IN
NSN5315-00-230-6248
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: AN280H404 · 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
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM OVERALL
•
STARTING EDGE SHAPE: ROUND
•
STYLE DESIGNATOR: ROUND BOTTOM
•
CIRCLE DIAMETER: 0.500 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
•
KEY HEIGHT: 0.198 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
•
KEY SIZE DESIGNATION: WOODRUFF 3
•
STARTING EDGE RADIUS: 0.008 INCHES MINIMUM AND 0.012 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 8630 OVERALL
TECHNICAL CHARACTERISTICS
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM OVERALL
STARTING EDGE SHAPEROUND
STYLE DESIGNATORROUND BOTTOM
CIRCLE DIAMETER0.500 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
KEY HEIGHT0.198 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
KEY SIZE DESIGNATIONWOODRUFF 3
STARTING EDGE RADIUS0.008 INCHES MINIMUM AND 0.012 INCHES MAXIMUM IN
MATERIALSTEEL COMP 8630 OVERALL
THICKNESS0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 4
3796419Reference document
Same NSN cross-reference
Reference document — Secondary reference
20521-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
404Reference document
Same NSN cross-reference
Reference document — Secondary reference
3Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AN280H404?
AN280H404 is a KEY,WOODRUFF.
What parts can replace AN280H404?
There are 4 known substitutes for AN280H404: 3796419, 20521-4, 404 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AN280H404?
AN280H404 is cataloged in the U.S. Government catalog under NSN 5315-00-230-6248. 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.