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Technical Data Sheet
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BG1191 ✓ 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 ADAPTER,STRAIGHT,PIPE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, body_style: STEPPED, leg_length: 3.375 INCHES MINIMUM AND 3.469 INCHES MAXIMUM ALL ENDS IN, seat_angle: 37.0 DEGREES, reducer_type: CONCENTRIC, thread_class: 3A FIRST END A. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-194-1115, 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
BG1191
NSN: 4730-00-194-1115
FSC: 4730
CAGE: 99832 — SCOTT HUBER ESSICK A CO OF FIGGIE INTERNATIONAL INC (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
body_styleSTEPPED
leg_length3.375 INCHES MINIMUM AND 3.469 INCHES MAXIMUM ALL ENDS IN
seat_angle37.0 DEGREES
reducer_typeCONCENTRIC
thread_class3A FIRST END A
overall_length2.250 INCHES NOMINAL IN
connection_typeTHREADED EXTERNAL BOSS ALL ENDS
connection_styleFLARED W/ GASKET SEAL (BOSS) ALL ENDS
special_featuresCAP DRILLER FOR ATTACHMENT FO SAFETY CHAIN
style_designatorINSERT AND THREADED INTERNAL
thread_directionRIGHT-HAND INTERNAL
NSN4730-00-194-1115
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: BG1191 · 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 21
12372Interchangeable
interchangeable cross-reference
interchangeable
150 VInterchangeable
interchangeable cross-reference
interchangeable
5133PL1398604Interchangeable
interchangeable cross-reference
interchangeable
SAE-AS4842/1Interchangeable
interchangeable cross-reference
interchangeable
SAE AS5194Interchangeable
interchangeable cross-reference
interchangeable
AN816-8JInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BG1191?
BG1191 is a ADAPTER,STRAIGHT,PIPE TO BOSS.
What parts can replace BG1191?
There are 21 known substitutes for BG1191: 12372, 150 V, 5133PL1398604 and 18 more. Substitute compatibility should be verified for your specific system.
Is BG1191 still available?
BG1191 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