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PartsTable / COMPONENT / 12175-B-3724-4A
12175-B-3724-4A ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The HANDLE,BOW is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 360 OVERALL, thread_class: 2A A, overall_length: 4.375 INCHES NOMINAL IN, handle_clearance: 1.425 INCHES MINIMUM AND 1.445 INCHES MAXIMUM IN, surface_treatment: NICKEL OVERALL, nominal_thread_size: 0.375 INCHES IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-045-2645, 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
12175-B-3724-4A
NSN: 5340-01-045-2645
FSC: 5340
CAGE: 06540 — NEW HAVEN MFG CORP AMATOM ELECTRONIC HARDWARE DIV (USA)
SPECIFICATIONS
materialCOPPER ALLOY 360 OVERALL
thread_class2A A
overall_length4.375 INCHES NOMINAL IN
handle_clearance1.425 INCHES MINIMUM AND 1.445 INCHES MAXIMUM IN
surface_treatmentNICKEL OVERALL
nominal_thread_size0.375 INCHES IN
mounting_facility_length1.125 INCHES NOMINAL IN
thread_series_designatorUNF
mounting_facility_quantity2
material_document_and_classificationQQ-B-626,1/2H FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-N-290,CLASS 1,GRADE A FED SPEC SINGLE TREATMENT RESPONSE OVERALL
center_to_center_distance_between_mounting_facilities_parallel_to_length3.990 INCHES MINIMUM AND 4.010 INCHES MAXIMUM IN
NSN5340-01-045-2645
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12175-B-3724-4A 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-626,1/2H FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD SERIES DESIGNATOR: UNF
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-N-290,CLASS 1,GRADE A FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL: COPPER ALLOY 360 OVERALL
•
SURFACE TREATMENT: NICKEL OVERALL
•
THREAD CLASS: 2A A
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH: 3.990 INCHES MINIMUM AND 4.010 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626,1/2H FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATORUNF
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-N-290,CLASS 1,GRADE A FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIALCOPPER ALLOY 360 OVERALL
SURFACE TREATMENTNICKEL OVERALL
THREAD CLASS2A A
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH3.990 INCHES MINIMUM AND 4.010 INCHES MAXIMUM IN
OVERALL LENGTH4.375 INCHES NOMINAL IN
MOUNTING FACILITY QUANTITY2
MOUNTING FACILITY LENGTH1.125 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
1662Interchangeable
interchangeable cross-reference
interchangeable
661Interchangeable
interchangeable cross-reference
interchangeable
661BInterchangeable
interchangeable cross-reference
interchangeable
955000-2Interchangeable
interchangeable cross-reference
interchangeable
A-A-50553Interchangeable
interchangeable cross-reference
interchangeable
5320Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12175-B-3724-4A?
12175-B-3724-4A is a HANDLE,BOW.
What parts can replace 12175-B-3724-4A?
There are 22 known substitutes for 12175-B-3724-4A: 1662, 661, 661B and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12175-B-3724-4A?
12175-B-3724-4A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-045-2645. This indicates validated use in U.S. government and defense supply chains.
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Last verified: July 2026