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Technical Data Sheet
PartsTable / MRO / 127951
127951 ✓ Verified by PartsTable
Hypertec · MRO · MRO_GENERAL
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 RELAY,ELECTROMAGNETIC is a Hypertec industrial component. Key specifications include material: STEEL COMP 4340, thread_class: 2A SINGLE MOUNTING FACILITY A, overall_width: 1.000 INCHES NOMINAL IN, overall_height: 1.780 INCHES MAXIMUM IN, overall_length: 1.000 INCHES NOMINAL IN, special_features: MOUNTING IN 3 CORNERS ON 0.687 IN SPACING IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-012-7951, 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
MRO→ MRO_GENERAL→ 127951
NSN: 4730-00-012-7951
FSC: 4730
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
materialSTEEL COMP 4340
thread_class2A SINGLE MOUNTING FACILITY A
coil_quantity1
overall_width1.000 INCHES NOMINAL IN
overall_height1.780 INCHES MAXIMUM IN
overall_length1.000 INCHES NOMINAL IN
special_featuresMOUNTING IN 3 CORNERS ON 0.687 IN SPACING IN
winding_quantity1
nominal_thread_size0.112 INCHES SINGLE MOUNTING FACILITY IN
fsc_application_dataAIRCRAFT ENGINE R2000
end_item_identificationF-22 RAPTOR
material_hardness_rating35.0 ROCKWELL C MINIMUM AND 240.0 ROCKWELL C MAXIMUM
NSN4730-00-012-7951
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 127951 · Hypertec ⚠ 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 29
249Interchangeable
interchangeable cross-reference
interchangeable
A249Interchangeable
interchangeable cross-reference
interchangeable
K-500-CH-1349Interchangeable
interchangeable cross-reference
interchangeable
MS14314-3XInterchangeable
interchangeable cross-reference
interchangeable
W6506BInterchangeable
interchangeable cross-reference
interchangeable
444632Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 127951?
127951 is a RELAY,ELECTROMAGNETIC manufactured by Hypertec. It is classified as a MRO (MRO_GENERAL).
What parts can replace 127951?
There are 29 known substitutes for 127951: 249, A249, K-500-CH-1349 and 26 more. Substitute compatibility should be verified for your specific system.
Is 127951 still available?
127951 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