PartsTable
Technical Data Sheet

3/8X1/4-GG-SS — ADAPTER,STRAIGHT,PIPE TO TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

3/8X1/4-GG-SS: ADAPTER,STRAIGHT,PIPE TO TUBE.

The ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, reducer_type: CONCENTRIC, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, surface_treatment: PASSIVATE OVERALL, nominal_thread_size: 0.250 INCHES SECOND END IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-307-6557, 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-GG-SS
NSN: 4730-00-307-6557
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 30780 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV TUBE FITTINGS DIVISION (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
reducer_typeCONCENTRIC
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.250 INCHES SECOND END IN
nominal_overall_length1.150 INCHES IN
media_for_which_designedAIR SECOND RESPONSE
thread_series_designatorNPTF ALL ENDS
nondefinitive_spec/std_data39 FIGURE
specification/standard_data81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
material_document_and_classification66,AISI 316/SAE 30316 FED STD SINGLE MATERIAL RESPONSE OVERALL
NSN4730-00-307-6557
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3/8X1/4-GG-SS · 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
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
•
NOMINAL OVERALL LENGTH: 1.150 INCHES IN
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66,AISI 316/SAE 30316 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD SIZE: 0.375 INCHES FIRST END IN
•
SPECIFICATION/STANDARD DATA: 81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
NONDEFINITIVE SPEC/STD DATA: 39 FIGURE
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
NOMINAL OVERALL LENGTH1.150 INCHES IN
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
MATERIAL DOCUMENT AND CLASSIFICATION66,AISI 316/SAE 30316 FED STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD SIZE0.375 INCHES FIRST END IN
NOMINAL THREAD SIZE0.250 INCHES SECOND END IN
SPECIFICATION/STANDARD DATA81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NONDEFINITIVE SPEC/STD DATA39 FIGURE
SURFACE TREATMENTPASSIVATE OVERALL
MEDIA FOR WHICH DESIGNEDAIR SECOND RESPONSE
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 7
SAE J514 6-4 140138SReference document
Same NSN cross-reference
Reference document — Secondary reference
J514Reference document
Same NSN cross-reference
Reference document — Secondary reference
3/8X1/4HCSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
SAE-J514-3Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
4-6-140138SSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
6-4-140138SReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3/8X1/4-GG-SS?
3/8X1/4-GG-SS is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace 3/8X1/4-GG-SS?
There are 7 known substitutes for 3/8X1/4-GG-SS: SAE J514 6-4 140138S, J514, 3/8X1/4HC and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3/8X1/4-GG-SS?
3/8X1/4-GG-SS is cataloged in the U.S. Government catalog under NSN 4730-00-307-6557. 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.