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274739-B21 — RACK MOUNTING KIT

✓ Government record, cited
HPE · ORING SEAL
PRODUCT OVERVIEW

274739-B21: RACK MOUNTING KIT.

The RACK MOUNTING KIT is a HPE industrial component. Key specifications include end_item_identification: USED FOR PROLIANT ML530 G2 AND ML570 G2 AND 3RD PARTY RACK, part_name_assigned_by_controlling_agency: (INAVY)COMPAQ RACK MOUNTING KIT PN: 274739-B21. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-568-1200, 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
274739-B21
NSN: 5340-01-568-1200
FSC: 5340 — Hardware, Commercial
CAGE: 65685 — COMPAQ COMPUTER CORP. (USA)
SPECIFICATIONS
end_item_identificationUSED FOR PROLIANT ML530 G2 AND ML570 G2 AND 3RD PARTY RACK
part_name_assigned_by_controlling_agency(INAVY)COMPAQ RACK MOUNTING KIT PN: 274739-B21
NSN5340-01-568-1200
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COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 274739-B21 MFR: HPE ⚠ 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
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCY(INAVY)COMPAQ RACK MOUNTING KIT PN: 274739-B21
END ITEM IDENTIFICATIONUSED FOR PROLIANT ML530 G2 AND ML570 G2 AND 3RD PARTY RACK
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 274739-B21?
274739-B21 is a RACK MOUNTING KIT manufactured by HPE.
What is the NSN for 274739-B21?
274739-B21 is cataloged in the U.S. Government catalog under NSN 5340-01-568-1200. 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.