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3/8X1/4 PTR-B — Technical Data Sheet

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— · 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

SEAL ASSEMBLY,SHAFT,SPRING LOADE. Key specifications include material: COPPER ALLOY, style_designator: OUTSIDE HEXAGON OR OCTAGON (PARTIAL OR FULL THREAD OPTIONAL), external_thread_size: 3/8, end_item_identification: 2350-01-087-1095 M1A1,ARMD BATTLETANK; MULTIPLE LAUNCH ROCKET SYSTEM (MLRS), external_thread_direction: RIGHT-HAND, internal_thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System under NSN 4730-00-202-6491, 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
3/8X1/4 PTR-B
NSN: 4730-00-202-6491
FSC: 4730
CAGE: 98441 — PARKER HANNIFIN CORP DBA PNEUTRONICS DIV STRATOFLEX PRODUCTS DIVISION (USA)
SPECIFICATIONS
materialCOPPER ALLOY
style_designatorOUTSIDE HEXAGON OR OCTAGON (PARTIAL OR FULL THREAD OPTIONAL)
external_thread_size3/8
end_item_identification2350-01-087-1095 M1A1,ARMD BATTLETANK; MULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
external_thread_directionRIGHT-HAND
internal_thread_directionRIGHT-HAND
external_screw_thread_series_designatorNH
internal_screw_thread_series_designatorNH
NSN4730-00-202-6491
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3/8X1/4 PTR-B · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
108630InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
W2418InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
100178InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
119928InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
1202065InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
022467InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3/8X1/4 PTR-B?
3/8X1/4 PTR-B is a SEAL ASSEMBLY,SHAFT,SPRING LOADE.
What parts can replace 3/8X1/4 PTR-B?
There are 29 known substitutes for 3/8X1/4 PTR-B: 108630, W2418, 100178 and 26 more. Substitute compatibility should be verified for your specific system.
Is 3/8X1/4 PTR-B still available?
3/8X1/4 PTR-B 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: September 2026