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Technical Data Sheet
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643972 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The BACKSHELL,ELECTRICAL CONNECTOR is a the manufacturer industrial component. Key specifications include height: 0.406 INCHES NOMINAL IN, material: COPPER ALLOY OR STEEL OVERALL, shank_length: 0.156 INCHES NOMINAL IN, shank_diameter: 0.253 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN, special_features: 463 CARGO HANDLING SYSTEM, style_designator: STRAIGHT, HINGED CAP, W/SHOULDER. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-223-6446, 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
643972
NSN: 4730-00-223-6446
FSC: 4730
CAGE: 93334 — ATWOOD FENCE CO INC (USA)
SPECIFICATIONS
height0.406 INCHES NOMINAL IN
materialCOPPER ALLOY OR STEEL OVERALL
shank_length0.156 INCHES NOMINAL IN
shank_diameter0.253 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
special_features463 CARGO HANDLING SYSTEM
style_designatorSTRAIGHT, HINGED CAP, W/SHOULDER
surface_treatmentCADMIUM OR NICKEL OVERALL
assembly_clearance_radius0.344 INCHES NOMINAL IN
NSN4730-00-223-6446
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 643972 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SHANK DIAMETER: 0.253 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
•
HEIGHT: 0.406 INCHES NOMINAL IN
•
ASSEMBLY CLEARANCE RADIUS: 0.344 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OR NICKEL OVERALL
•
STYLE DESIGNATOR: STRAIGHT, HINGED CAP, W/SHOULDER
•
MATERIAL: COPPER ALLOY OR STEEL OVERALL
•
SHANK LENGTH: 0.156 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SHANK DIAMETER0.253 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
SPECIAL FEATURES463 CARGO HANDLING SYSTEM
HEIGHT0.406 INCHES NOMINAL IN
ASSEMBLY CLEARANCE RADIUS0.344 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OR NICKEL OVERALL
STYLE DESIGNATORSTRAIGHT, HINGED CAP, W/SHOULDER
MATERIALCOPPER ALLOY OR STEEL OVERALL
SHANK LENGTH0.156 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
P-212Interchangeable
interchangeable cross-reference
interchangeable
WWP471Interchangeable
interchangeable cross-reference
interchangeable
A-A-59616Interchangeable
interchangeable cross-reference
interchangeable
1731Z2Interchangeable
interchangeable cross-reference
interchangeable
173122Interchangeable
interchangeable cross-reference
interchangeable
G501Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 643972?
643972 is a BACKSHELL,ELECTRICAL CONNECTOR.
What parts can replace 643972?
There are 29 known substitutes for 643972: P-212, WWP471, A-A-59616 and 26 more. Substitute compatibility should be verified for your specific system.
Is 643972 still available?
643972 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026