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PartsTable / COMPONENT / 20-1/2 ASTMA-10
20-1/2 ASTMA-10 ✓ 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 20-1/2 ASTMA-10 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-022-3946, 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
20-1/2 ASTMA-10
NSN: 4730-01-022-3946
FSC: 4730
CAGE: 34646 — ATI LADISH LLC DBA ATI WAH CHANG DIV ATI FORGED PRODUCTS - CUDAHY (USA)
SPECIFICATIONS
Part Number20-1/2 ASTMA-10
NSN4730-01-022-3946
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 20-1/2 ASTMA-10 · 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 34
S3209BInterchangeable
interchangeable cross-reference
interchangeable
G8897PC57Interchangeable
interchangeable cross-reference
interchangeable
G15172PC50Interchangeable
interchangeable cross-reference
interchangeable
S3263AInterchangeable
interchangeable cross-reference
interchangeable
HC-29N/0221Interchangeable
interchangeable cross-reference
interchangeable
H-3373Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20-1/2 ASTMA-10?
20-1/2 ASTMA-10 is a 20-1/2 ASTMA-10.
What parts can replace 20-1/2 ASTMA-10?
There are 34 known substitutes for 20-1/2 ASTMA-10: S3209B, G8897PC57, G15172PC50 and 31 more. Substitute compatibility should be verified for your specific system.
Is 20-1/2 ASTMA-10 still available?
20-1/2 ASTMA-10 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