Approved sources and substitutes
Every maker's item codified on this stock number, with the catalogue's order of use.
OEM source-control number — the OEM’s own reference for this item; the other members are its approved sources per codification. All of this OEM’s references →
INSULATOR,STANDOFF
NSN 5970-00-151-7973
THREAD LENGTH: 0.250 INCHES NOMINAL DIELECTRIC MATERIAL VOLTAGE RATING PER UNIT THICKNESS: 249.0 VOLTS PER MIL /0.001 INCH/ OUTSIDE DIAMETER: 0.500 INCHES NOMINAL SCREW THREAD DIAMETER AND LOCATION: 0.164 ELECTRICAL TERMINATION INCHES NOMINAL AND 0.164 MOUNTING FACILITY INCHES NOMINAL
OEM source-control number — the OEM’s own reference for this item; the other members are its approved sources per codification. All of this OEM’s references →
INSULATOR,BUSHING
NSN 5970-00-280-9427
INSIDE DIAMETER: 0.156 INCHES NOMINAL OUTSIDE DIAMETER: 0.625 INCHES NOMINAL SHANK OUTSIDE DIAMETER: 0.344 INCHES NOMINAL TOP DIAMETER: 0.500 INCHES NOMINAL
10-47D DABURN WIRE & CABLE CORP
CONFIRMED
INSULATOR,STANDOFF
NSN 5970-00-134-9074
THREAD LENGTH: 0.625 INCHES NOMINAL OUTSIDE DIAMETER: 1.000 INCHES NOMINAL SCREW THREAD DIAMETER AND LOCATION: 0.250 ELECTRICAL TERMINATION INCHES NOMINAL AND 0.250 MOUNTING FACILITY INCHES NOMINAL OVERALL HEIGHT: 2.000 INCHES NOMINAL
1054627 NAVAIR AND NAVSEA MANAGED ORIGINAL
CONFIRMED
INSULATOR,STANDOFF
NSN 5970-00-578-2181
OUTSIDE DIAMETER: 0.375 INCHES NOMINAL SCREW THREAD DIAMETER AND LOCATION: 0.138 ELECTRICAL TERMINATION INCHES NOMINAL AND 0.138 MOUNTING FACILITY INCHES NOMINAL OVERALL HEIGHT: 0.750 INCHES NOMINAL IDENTIFICATION CODE COLOR: WHITE
1172B ADVANCED TECHNICAL CERAMICS COMPANY
CONFIRMED
INSULATOR,BUSHING
NSN 5970-00-284-8430
INSIDE DIAMETER: 0.143 INCHES NOMINAL OUTSIDE DIAMETER: 0.500 INCHES NOMINAL SHANK OUTSIDE DIAMETER: 0.234 INCHES NOMINAL TOP DIAMETER: 0.375 INCHES NOMINAL
2044-351 L3HARRIS TECHNOLOGIES, INC.
CONFIRMED
INSULATOR,STANDOFF
NSN 5970-00-642-8295
THREAD LENGTH: 0.375 INCHES NOMINAL DIELECTRIC MATERIAL VOLTAGE RATING PER UNIT THICKNESS: 249.0 VOLTS PER MIL /0.001 INCH/ OUTSIDE DIAMETER: 0.375 INCHES NOMINAL SCREW THREAD DIAMETER AND LOCATION: 0.138 ELECTRICAL TERMINATION INCHES NOMINAL AND 0.138 MOUNTING FACILITY INCHES NOMINAL
426768-12 LOCKHEED MARTIN CORPORATION
CONFIRMED
INSULATOR,STANDOFF
NSN 5970-00-280-4890
THREAD LENGTH: 0.625 INCHES NOMINAL DIELECTRIC MATERIAL VOLTAGE RATING PER UNIT THICKNESS: 249.0 VOLTS PER MIL /0.001 INCH/ OUTSIDE DIAMETER: 1.000 INCHES NOMINAL SCREW THREAD DIAMETER AND LOCATION: 0.250 ELECTRICAL TERMINATION INCHES NOMINAL AND 0.250 MOUNTING FACILITY INCHES NOMINAL
INSULATOR,STANDOFF
NSN 5970-00-931-1115
THREAD LENGTH: 0.375 INCHES NOMINAL DIELECTRIC MATERIAL VOLTAGE RATING PER UNIT THICKNESS: 299.0 VOLTS PER MIL /0.001 INCH/ OUTSIDE DIAMETER: 0.500 INCHES NOMINAL SCREW THREAD DIAMETER AND LOCATION: 0.164 ELECTRICAL TERMINATION INCHES NOMINAL AND 0.164 MOUNTING FACILITY INCHES NOMINAL
7606246 U S ARMY ARMAMENT RESEARCH &
CONFIRMED
INSULATOR,STANDOFF
NSN 5970-00-117-4954
THREAD LENGTH: 0.375 INCHES NOMINAL DIELECTRIC MATERIAL VOLTAGE RATING PER UNIT THICKNESS: 249.0 VOLTS PER MIL /0.001 INCH/ OUTSIDE DIAMETER: 1.125 INCHES NOMINAL TOP DIAMETER: 0.625 INCHES NOMINAL
INSULATOR,STANDOFF
NSN 5970-00-151-8012
THREAD LENGTH: 0.375 INCHES NOMINAL OUTSIDE DIAMETER: 0.500 INCHES NOMINAL SCREW THREAD DIAMETER AND LOCATION: 0.164 ELECTRICAL TERMINATION INCHES NOMINAL AND 0.164 MOUNTING FACILITY INCHES NOMINAL OVERALL HEIGHT: 1.000 INCHES NOMINAL
8A1222 NORTHROP GRUMMAN SYSTEMS CORPORATIO
CONFIRMED
INSULATOR,STRAIN
NSN 5970-00-405-8971
OVERALL LENGTH: 4.000 INCHES NOMINAL OUTSIDE DIAMETER: 0.750 INCHES NOMINAL WIRE HOLE DIAMETER: 0.188 INCHES NOMINAL IDENTIFICATION CODE COLOR: BROWN
9166193 US ARMY AVIATION AND MISSILE COMMAND
CONFIRMED
INSULATOR,STANDOFF
NSN 5970-00-117-5139
THREAD LENGTH: 0.375 INCHES NOMINAL DIELECTRIC MATERIAL VOLTAGE RATING PER UNIT THICKNESS: 249.0 VOLTS PER MIL /0.001 INCH/ OUTSIDE DIAMETER: 0.500 INCHES NOMINAL SCREW THREAD DIAMETER AND LOCATION: 0.164 ELECTRICAL TERMINATION INCHES NOMINAL AND 0.164 MOUNTING FACILITY INCHES NOMINAL
JANI8 JOINT ARMY-NAVY SPECIFICATIONS
CONFIRMED
INSULATOR,STANDOFF
NSN 5970-00-027-8617
OUTSIDE DIAMETER: 0.750 INCHES NOMINAL SCREW THREAD DIAMETER AND LOCATION: 0.190 ELECTRICAL TERMINATION INCHES NOMINAL AND 0.190 MOUNTING FACILITY INCHES NOMINAL OVERALL HEIGHT: 3.000 INCHES NOMINAL IDENTIFICATION CODE COLOR: WHITE
INSULATOR,STANDOFF
NSN 5970-00-003-3311
THREAD LENGTH: 0.250 INCHES NOMINAL OUTSIDE DIAMETER: 0.500 INCHES NOMINAL SCREW THREAD DIAMETER AND LOCATION: 0.250 MOUNTING FACILITY INCHES NOMINAL AND 0.164 ELECTRICAL TERMINATION INCHES NOMINAL OVERALL HEIGHT: 0.750 INCHES NOMINAL
INSULATOR,BUSHING
NSN 5970-00-054-8897
INSIDE DIAMETER: 0.156 INCHES NOMINAL OUTSIDE DIAMETER: 0.625 INCHES NOMINAL SHANK OUTSIDE DIAMETER: 0.344 INCHES NOMINAL TOP DIAMETER: 0.500 INCHES NOMINAL
INSULATOR,STANDOFF
NSN 5970-00-076-1599
OVERALL WIDTH: 0.500 INCHES NOMINAL THREAD LENGTH: 0.375 INCHES NOMINAL OVERALL LENGTH: 0.500 INCHES NOMINAL DIELECTRIC MATERIAL VOLTAGE RATING PER UNIT THICKNESS: 249.0 VOLTS PER MIL /0.001 INCH/
INSULATOR,STRAIN
NSN 5970-00-178-1150
OVERALL LENGTH: 4.000 INCHES NOMINAL OUTSIDE DIAMETER: 0.750 INCHES NOMINAL WIRE HOLE DIAMETER: 0.188 INCHES NOMINAL IDENTIFICATION CODE COLOR: BROWN
INSULATOR,STANDOFF
NSN 5970-00-117-4954
THREAD LENGTH: 0.375 INCHES NOMINAL DIELECTRIC MATERIAL VOLTAGE RATING PER UNIT THICKNESS: 249.0 VOLTS PER MIL /0.001 INCH/ OUTSIDE DIAMETER: 1.125 INCHES NOMINAL TOP DIAMETER: 0.625 INCHES NOMINAL
INSULATOR,BUSHING
NSN 5970-00-158-6861
INSIDE DIAMETER: 0.200 INCHES NOMINAL OUTSIDE DIAMETER: 0.875 INCHES NOMINAL SHANK OUTSIDE DIAMETER: 0.469 INCHES NOMINAL TOP DIAMETER: 0.750 INCHES NOMINAL
INSULATOR,STANDOFF
NSN 5970-00-263-3977
OVERALL WIDTH: 1.000 INCHES NOMINAL OVERALL LENGTH: 1.250 INCHES NOMINAL MOUNTING BOLT CIRCLE DIAMETER: 0.374 INCHES NOMINAL SCREW THREAD DIAMETER AND LOCATION: 0.164 ELECTRICAL TERMINATION INCHES NOMINAL
INSULATOR,STANDOFF
NSN 5970-00-238-5949
THREAD LENGTH: 0.375 INCHES NOMINAL DIELECTRIC MATERIAL VOLTAGE RATING PER UNIT THICKNESS: 299.0 VOLTS PER MIL /0.001 INCH/ OUTSIDE DIAMETER: 0.750 INCHES NOMINAL SCREW THREAD DIAMETER AND LOCATION: 0.190 ELECTRICAL TERMINATION INCHES NOMINAL AND 0.190 MOUNTING FACILITY INCHES NOMINAL
P60135J ADVANCED TECHNICAL CERAMICS COMPANY
CONFIRMED
INSULATOR,BUSHING
NSN 5970-00-159-1385
INSIDE DIAMETER: 0.200 INCHES NOMINAL OUTSIDE DIAMETER: 1.125 INCHES NOMINAL FIRST COUNTERBORE DIAMETER: 0.750 INCHES NOMINAL OVERALL HEIGHT: 0.750 INCHES NOMINAL
Stated characteristics
The codification record's own dimensions and material statements — official, and public by nature.
IDENTIFICATION CODE COLORWHITEFLIS characteristics (MRC)
OUTSIDE DIAMETER0.375 INCHES NOMINALFLIS characteristics (MRC)
OVERALL HEIGHT0.750 INCHES NOMINALFLIS characteristics (MRC)
MOUNTING FACILITY TYPE AND QUANTITY2 THREADED HOLE(S)FLIS characteristics (MRC)
SCREW THREAD QUANTITY PER INCH AND LOCATION32 ELECTRICAL TERMINATION AND 32 MOUNTING FACILITYFLIS characteristics (MRC)
SCREW THREAD DIAMETER AND LOCATION0.138 ELECTRICAL TERMINATION INCHES NOMINAL AND 0.138 MOUNTING FACILITY INCHES NOMINALFLIS characteristics (MRC)
THREAD CLASS AND LOCATION2B ELECTRICAL TERMINATION AND 2B MOUNTING FACILITYFLIS characteristics (MRC)
STYLE DESIGNATORPILLARFLIS characteristics (MRC)
Staying inside the regulation — routes from candidate to approved
Codification and qualification say who vouches for a part — they are not installation eligibility. Under EASA Part-21, eligibility flows from the approved design (type design / IPC) or an approved change; under Part-145, acceptance needs an EASA Form 1 or, for genuine standard parts, conformity traceable to the officially recognised standard (145.A.42).
- Classify the part. Is it a GENUINE standard part? If the IPC/CMM references only a public specification (AN/MS/NAS/SAE-AS/ISO/EN) with no OEM source-control drawing, buy at source with conformity traceable to that standard.
- Check for an approved alternate. The IPC/CMM/vendor list may already carry an alternate part number or vendor code — an already-approved alternate needs no new approval.
- Ask the design approval holder. Request the source-control data, written equivalence, or addition of the alternative source to the approved data. Document a refusal.
- Raise a design change. Via a Part-21J DOA (or EASA/ADOA): a 21.A.95 minor change adding the alternate to the approved data, backed by an identicality/equivalence file — dimensions, material, class, load rating, lubricant/seal, corrosion protection, acceptance criteria. Critical applications escalate to major change/STC.
- FAA-PMA / BASA path. Where the product is also FAA-certificated: PMA parts reach EASA aircraft under the BASA/TIP (non-critical directly; critical via EASA-validated STC).
- Production, release, traceability. Approved parts are produced under a POA, released on an EASA Form 1 (marked EPA where applicable), with EN/AS 9120-grade traceability into Part-145/CAMO acceptance.
Stage 1(a): we assemble the equivalence/identicality starter file — the cited evidence this graph holds, shaped for your DOA or compliance department to take forward. See pricing.
Regulatory explainer, not legal advice: paragraph numbers, derogations and the BASA/TIP revision change — verify against the current consolidated Regulation (EU) 748/2012, the EASA Easy Access Rules and the current TIP, and engage your DOA and competent authority early.