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521483578 — HOLDER,ROLLER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

521483578: HOLDER,ROLLER.

The HOLDER,ROLLER is a the manufacturer industrial component. Key specifications include material: GLASS FIBER, special_features: 0.687 IN. LG;0.562 IN.

OD;0.188 IN. ID IN, fsc_application_data: TELETYPE AND FACSIMILE EQUIPMENT. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-931-7717, 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
521483578
NSN: 5340-00-931-7717
FSC: 5340 — Hardware, Commercial
CAGE: 57712 — TELEMECHANICS INC (USA)
SPECIFICATIONS
materialGLASS FIBER
special_features0.687 IN. LG;0.562 IN. OD;0.188 IN. ID IN
fsc_application_dataTELETYPE AND FACSIMILE EQUIPMENT
NSN5340-00-931-7717
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 521483578 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
•
FSC APPLICATION DATA: TELETYPE AND FACSIMILE EQUIPMENT
•
MATERIAL: GLASS FIBER
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATATELETYPE AND FACSIMILE EQUIPMENT
SPECIAL FEATURES0.687 IN. LG;0.562 IN. OD;0.188 IN. ID IN
MATERIALGLASS FIBER
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 1
148357Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 521483578?
521483578 is a HOLDER,ROLLER.
What parts can replace 521483578?
There is 1 known substitute for 521483578: 148357. Substitute compatibility should be verified for your specific system.
What is the NSN for 521483578?
521483578 is cataloged in the U.S. Government catalog under NSN 5340-00-931-7717. 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.