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321527 — SWITCH,PRESSURE

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

321527: SWITCH,PRESSURE.

The SWITCH,PRESSURE is a the manufacturer industrial component. Key specifications include width: 35.000 INCHES MINIMUM AND 44.000 INCHES MAXIMUM IN, material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR AND COTTON LOCATION NOT OTHERWISE SPECIFIED, thickness: 0.105 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN, terminal_type: CONNECTOR, RECEPTACLE, overall_length: 3.190 INCHES MAXIMUM IN, proof_pressure: 150.00 POUNDS PER SQUARE INCH LBS. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-179-0052, 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
MRO→ MRO_GENERAL→ 321527
NSN: 5330-00-179-0052
NIINs: 001790052, 004280915, 011108469
FSC: 5330 — Packing and Gasket Materials
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
width35.000 INCHES MINIMUM AND 44.000 INCHES MAXIMUM IN
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR AND COTTON LOCATION NOT OTHERWISE SPECIFIED
thickness0.105 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
terminal_typeCONNECTOR, RECEPTACLE
overall_length3.190 INCHES MAXIMUM IN
proof_pressure150.00 POUNDS PER SQUARE INCH LBS
insert_quantity2
style_designatorCYLINDRICAL
surface_conditionSMOOTH BOTH SIDES
width_across_flats0.730 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN
pressure_switch_typeGAGE
contact_adjustabilityACTUATION POINT ADJUSTABLE
NSN5330-00-179-0052
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 321527 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
•
STRENGTHENING FEATURE: INSERT
•
MINIMUM TENSILE STRENGTH: ERR-060
•
MATERIAL DOCUMENT AND CLASSIFICATION: HH-P-151 CL 4 FED SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
•
SURFACE CONDITION: SMOOTH BOTH SIDES
•
INSERT QUANTITY: 2
•
NONDEFINITIVE SPEC/STD DATA: 4 CLASS
•
ENVIRONMENTAL PROTECTION: OIL RESISTANT AND WATER RESISTANT
•
WIDTH: 35.000 INCHES MINIMUM AND 44.000 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
STRENGTHENING FEATUREINSERT
MINIMUM TENSILE STRENGTHERR-060
MATERIAL DOCUMENT AND CLASSIFICATIONHH-P-151 CL 4 FED SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
SURFACE CONDITIONSMOOTH BOTH SIDES
INSERT QUANTITY2
NONDEFINITIVE SPEC/STD DATA4 CLASS
ENVIRONMENTAL PROTECTIONOIL RESISTANT AND WATER RESISTANT
WIDTH35.000 INCHES MINIMUM AND 44.000 INCHES MAXIMUM IN
MATERIALCOTTON STRENGTHENING FEATURE
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR AND COTTON LOCATION NOT OTHERWISE SPECIFIED
SUBSTITUTES & CROSS-REFERENCES 9
HH-P-151CL2 1/8 INReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
HH-P-151 CLASS 4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
508-4686239 ITEReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
CW2300KPC625ANDReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
HH-P-151 1/8THKReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
9W110-1103Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Shelf-life managedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 321527?
321527 is a SWITCH,PRESSURE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 321527?
There are 9 known substitutes for 321527: HH-P-151CL2 1/8 IN, HH-P-151 CLASS 4, 508-4686239 ITE and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 321527?
321527 is cataloged in the U.S. Government catalog under NSN 5330-00-179-0052. 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.