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4255473 — RETAINER,NUT AND BOLT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4255473: RETAINER,NUT AND BOLT.

The RETAINER,NUT AND BOLT is a the manufacturer industrial component. Key specifications include material: STEEL, overall_width: 0.650 INCHES NOMINAL IN, overall_height: 0.360 INCHES NOMINAL IN, overall_length: 0.840 INCHES NOMINAL IN, special_features: 250-20 UNC RECTANGLE NUT INCLUDED, material_thickness: 0.039 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-138-0418, 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
4255473
NSN: 5340-00-138-0418
FSC: 5340 — Hardware, Commercial
CAGE: 0AHU0 — KALMAR AC INC (USA)
SPECIFICATIONS
materialSTEEL
overall_width0.650 INCHES NOMINAL IN
overall_height0.360 INCHES NOMINAL IN
overall_length0.840 INCHES NOMINAL IN
special_features250-20 UNC RECTANGLE NUT INCLUDED
material_thickness0.039 INCHES NOMINAL IN
NSN5340-00-138-0418
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4255473 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL THICKNESS: 0.039 INCHES NOMINAL IN
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.360 INCHES NOMINAL IN
OVERALL LENGTH0.840 INCHES NOMINAL IN
OVERALL WIDTH0.650 INCHES NOMINAL IN
MATERIAL THICKNESS0.039 INCHES NOMINAL IN
SPECIAL FEATURES250-20 UNC RECTANGLE NUT INCLUDED
MATERIALSTEEL
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
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 4255473?
4255473 is a RETAINER,NUT AND BOLT.
What is the NSN for 4255473?
4255473 is cataloged in the U.S. Government catalog under NSN 5340-00-138-0418. 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.