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57453AX — KEY,MACHINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

57453AX: KEY,MACHINE.

The KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OVERALL, flat_height: 0.115 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN, minor_width: 0.101 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN, overall_width: 0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, overall_height: 0.218 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN, overall_length: 1.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-197-4378, 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
57453AX
NSN: 5315-01-197-4378
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OVERALL
flat_height0.115 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
minor_width0.101 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
overall_width0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
overall_height0.218 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN
overall_length1.250 INCHES NOMINAL IN
shoulder_width0.030 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
hardness_rating34.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL
style_designatorT SHAPE
starting_edge_shapeROUND
starting_edge_radius0.030 INCHES NOMINAL IN
NSN5315-01-197-4378
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 57453AX · 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
•
SHOULDER WIDTH: 0.030 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
•
HARDNESS RATING: 34.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL
•
STARTING EDGE SHAPE: ROUND
•
STYLE DESIGNATOR: T SHAPE
•
MINOR WIDTH: 0.101 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.218 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN
SHOULDER WIDTH0.030 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
HARDNESS RATING34.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL
STARTING EDGE SHAPEROUND
STYLE DESIGNATORT SHAPE
OVERALL LENGTH1.250 INCHES NOMINAL IN
OVERALL WIDTH0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
MINOR WIDTH0.101 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
STARTING EDGE RADIUS0.030 INCHES NOMINAL IN
MATERIALSTEEL COMP 4140 OVERALL
OTHER ITEMS IN FSC 5315 — Nails, Machine Keys, and Pins
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5315-00-000-1037 5315-00-000-1067 5315-00-000-1245 5315-00-000-1372 5315-00-000-1412 5315-00-001-1571 5315-00-001-1572 5315-00-001-1602
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 57453AX?
57453AX is a KEY,MACHINE.
What is the NSN for 57453AX?
57453AX is cataloged in the U.S. Government catalog under NSN 5315-01-197-4378. 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.