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520071-1 — PLUG,MACHINE THREAD

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

520071-1: PLUG,MACHINE THREAD.

The PLUG,MACHINE THREAD is a the manufacturer industrial component. Key specifications include material: BRASS BODY, thread_length: 1.25 INCHES NOMINAL EXTERNAL IN, special_features: FEATURES A CAM ACTION FOR EASY INSTALLATION AND LEAK PROOF SEAL, features_provided: CHAIN, washer_face_diameter: 1.0 INCHES NOMINAL IN, part_name_assigned_by_controlling_agency: SNAP HANDLE DRAIN PLUG. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-717-7761, 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
520071-1
NSN: 4730-01-717-7761
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 41830 — SEA-DOG LINE DIV OF SNEVE-NYSETHER INC (USA)
SPECIFICATIONS
materialBRASS BODY
thread_length1.25 INCHES NOMINAL EXTERNAL IN
special_featuresFEATURES A CAM ACTION FOR EASY INSTALLATION AND LEAK PROOF SEAL
features_providedCHAIN
washer_face_diameter1.0 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencySNAP HANDLE DRAIN PLUG
NSN4730-01-717-7761
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 520071-1 · 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
•
THREAD LENGTH: 1.25 INCHES NOMINAL EXTERNAL IN
•
FEATURES PROVIDED: CHAIN
•
WASHER FACE DIAMETER: 1.0 INCHES NOMINAL IN
•
MATERIAL: BRASS BODY
TECHNICAL CHARACTERISTICS
THREAD LENGTH1.25 INCHES NOMINAL EXTERNAL IN
FEATURES PROVIDEDCHAIN
SPECIAL FEATURESFEATURES A CAM ACTION FOR EASY INSTALLATION AND LEAK PROOF SEAL
WASHER FACE DIAMETER1.0 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYSNAP HANDLE DRAIN PLUG
MATERIALBRASS BODY
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 520071-1?
520071-1 is a PLUG,MACHINE THREAD.
What is the NSN for 520071-1?
520071-1 is cataloged in the U.S. Government catalog under NSN 4730-01-717-7761. 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.