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4912-B — PULLEY,CONE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

4912-B: PULLEY,CONE.

The PULLEY,CONE is a the manufacturer industrial component. Key specifications include material: IRON CAST OVERALL, face_type: STEP GROOVE, face_width: 0.688 INCHES NOMINAL IN, design_form: SPOKED, overall_length: 1.375 INCHES NOMINAL IN, lightening_hole: NOT INCLUDED. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-939-6234, 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
4912-B
NSN: 4730-00-939-6234
NIINs: 009396234, 011844715
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 64484 — SARGENT-WELCH SCIENTIFIC CO (USA)
SPECIFICATIONS
materialIRON CAST OVERALL
face_typeSTEP GROOVE
face_width0.688 INCHES NOMINAL IN
design_formSPOKED
groove_shapeV
overall_length1.375 INCHES NOMINAL IN
groove_quantity2
lightening_holeNOT INCLUDED
style_designatorWEBBED OR SPOKED
integral_cooling_vaneNOT INCLUDED
step_outside_diameter11.550 INCHES NOMINAL AND 5.350 INCHES NOMINAL IN
v_groove_angle_in_deg38.0 AND 40.0
NSN4730-00-939-6234
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4912-B · 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 9
5216Reference document
Same NSN cross-reference
Reference document — Secondary reference
C16PReference document
Same NSN cross-reference
Reference document — Secondary reference
333710R91Reference document
Same NSN cross-reference
Reference document — Secondary reference
20016HReference document
Same NSN cross-reference
Reference document — Secondary reference
7121139P10Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
211-528-9005Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4912-B?
4912-B is a PULLEY,CONE.
What parts can replace 4912-B?
There are 9 known substitutes for 4912-B: 5216, C16P, 333710R91 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4912-B?
4912-B is cataloged in the U.S. Government catalog under NSN 4730-00-939-6234. 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.