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1LAK37 — PLUG,HOUSING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1LAK37: PLUG,HOUSING.

The PLUG,HOUSING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 2.8350 INCHES NOMINAL IN, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 5.1970 INCHES NOMINAL IN, body_outside_diameter: 6.7090 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-183-4451, 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
1LAK37
NSN: 4730-01-183-4451
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 61178 — TUTHILL CORPORATION DBA TUTHILL PUMP GROUP (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length2.8350 INCHES NOMINAL IN
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter5.1970 INCHES NOMINAL IN
body_outside_diameter6.7090 INCHES NOMINAL IN
end_item_identificationUSED IN A PROPULSION SYSTEMS INC. SERVO CYLINDER AND COUPLING ASSY MODEL G50 ABOARD 157 FT U.S. COAST GUARD VESSELS FT
NSN4730-01-183-4451
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1LAK37 · 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
SUBSTITUTES & CROSS-REFERENCES 3
20731-C DET NO 12Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
1LAK37 13828AReference document
Same NSN cross-reference
Reference document — Secondary reference
13828-AReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 1LAK37?
1LAK37 is a PLUG,HOUSING.
What parts can replace 1LAK37?
There are 3 known substitutes for 1LAK37: 20731-C DET NO 12, 1LAK37 13828A, 13828-A. Substitute compatibility should be verified for your specific system.
What is the NSN for 1LAK37?
1LAK37 is cataloged in the U.S. Government catalog under NSN 4730-01-183-4451. 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.