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520-064 — FACEPLATE,DIVER'S HELMET,CLEAR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

520-064: FACEPLATE,DIVER'S HELMET,CLEAR.

The FACEPLATE,DIVER'S HELMET,CLEAR is a the manufacturer industrial component. Key specifications include material: PLASTIC, overall_width: 5.000 INCHES NOMINAL IN, overall_height: 5.000 INCHES NOMINAL IN, special_features: A NEW VACUUM FORMED ABS VISOR, end_item_identification: SL-17 AND MK-21 VISOR. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-130-7878, 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
520-064
NSN: 5340-01-130-7878
NIINs: 011307878, 015603344
FSC: 5340 — Hardware, Commercial
CAGE: 04664 — PIERCE MANUFACTURING INC (USA)
SPECIFICATIONS
materialPLASTIC
overall_width5.000 INCHES NOMINAL IN
overall_height5.000 INCHES NOMINAL IN
special_featuresA NEW VACUUM FORMED ABS VISOR
end_item_identificationSL-17 AND MK-21 VISOR
NSN5340-01-130-7878
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 520-064 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
•
MOUNTING FACILITY QUANTITY: 1
•
HANDLE HEIGHT: 1.630 INCHES NOMINAL IN
•
STYLE DESIGNATOR: T
•
HANDLE CLEARANCE: 1.250 INCHES NOMINAL IN
•
MATERIAL: ZINC ALLOY OVERALL
TECHNICAL CHARACTERISTICS
MOUNTING FACILITY QUANTITY1
HANDLE HEIGHT1.630 INCHES NOMINAL IN
STYLE DESIGNATORT
OVERALL LENGTH3.750 INCHES NOMINAL IN
HANDLE CLEARANCE1.250 INCHES NOMINAL IN
MATERIALZINC ALLOY OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
452-0064Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 520-064?
520-064 is a FACEPLATE,DIVER'S HELMET,CLEAR.
What parts can replace 520-064?
There is 1 known substitute for 520-064: 452-0064. Substitute compatibility should be verified for your specific system.
What is the NSN for 520-064?
520-064 is cataloged in the U.S. Government catalog under NSN 5340-01-130-7878. This indicates validated use in U.S. government and defense supply chains.
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