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A21348-1 — MOUNTING BLOCK

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

A21348-1: MOUNTING BLOCK.

The MOUNTING BLOCK is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5340-01-100-4316, 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
A21348-1
NSN: 5340-01-100-4316
FSC: 5340 — Hardware, Commercial
CAGE: 30377 — SMITHS AEROSPACE, INC., ELECTRONIC SYSTEMS-GRAND RAPIDS (USA)
SPECIFICATIONS
Part NumberA21348-1
NSN5340-01-100-4316
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A21348-1 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
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: MATERIAL ALUMINUM ALLOY 2024-T351; FINISH CHEMICAL FILM MIL-C-5541 CL 1A; LG 2.500 IN. NOM; WIDTH 0.250 IN. NOM; 4 HOLES,1/4/0.250/-28 UNF-2B THRUC,SINK 82 DEG TO .31 DIA; 3 HOLES 4/0.112/-40 UNC-2B A
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONMATERIAL ALUMINUM ALLOY 2024-T351; FINISH CHEMICAL FILM MIL-C-5541 CL 1A; LG 2.500 IN. NOM; WIDTH 0.250 IN. NOM; 4 HOLES,1/4/0.250/-28 UNF-2B THRUC,SINK 82 DEG TO .31 DIA; 3 HOLES 4/0.112/-40 UNC-2B A
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A21348-1?
A21348-1 is a MOUNTING BLOCK.
What is the NSN for A21348-1?
A21348-1 is cataloged in the U.S. Government catalog under NSN 5340-01-100-4316. This indicates validated use in U.S. government and defense supply chains.
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