Approved sources and substitutes
Every maker's item codified on this stock number, with the catalogue's order of use.
INSULATOR,STANDOFF
NSN 5970-00-117-5272
OVERALL WIDTH: 1.000 INCHES NOMINAL OVERALL LENGTH: 1.000 INCHES NOMINAL MOUNTING BOLT CIRCLE DIAMETER: 0.375 INCHES NOMINAL SCREW THREAD DIAMETER AND LOCATION: 0.164 ELECTRICAL TERMINATION INCHES NOMINAL
426772-6 LOCKHEED MARTIN CORPORATION
CONFIRMED
INSULATOR,STANDOFF
NSN 5970-00-552-9839
OVERALL WIDTH: 0.500 INCHES NOMINAL THREAD LENGTH: 0.375 INCHES NOMINAL OVERALL LENGTH: 1.000 INCHES NOMINAL DIELECTRIC MATERIAL VOLTAGE RATING PER UNIT THICKNESS: 249.0 VOLTS PER MIL /0.001 INCH/
426773-3 LOCKHEED MARTIN CORPORATION
CONFIRMED
INSULATOR,STANDOFF
NSN 5970-00-552-9840
OVERALL WIDTH: 0.750 INCHES NOMINAL THREAD LENGTH: 0.375 INCHES NOMINAL OVERALL LENGTH: 1.000 INCHES NOMINAL DIELECTRIC MATERIAL VOLTAGE RATING PER UNIT THICKNESS: 249.0 VOLTS PER MIL /0.001 INCH/
61187 NAVAL SHIP SYSTEMS COMMAND
CONFIRMED
INSULATOR,STANDOFF
NSN 5970-00-156-6113
OVERALL WIDTH: 0.500 INCHES NOMINAL OVERALL LENGTH: 0.750 INCHES NOMINAL SCREW THREAD DIAMETER AND LOCATION: 0.164 ELECTRICAL TERMINATION INCHES NOMINAL AND 0.164 MOUNTING FACILITY INCHES NOMINAL OVERALL HEIGHT: 0.500 INCHES NOMINAL
61300 NAVAL SHIP SYSTEMS COMMAND
CONFIRMED
INSULATOR,STANDOFF
NSN 5970-00-117-5353
OVERALL WIDTH: 0.719 INCHES NOMINAL OVERALL LENGTH: 0.719 INCHES NOMINAL SCREW THREAD DIAMETER AND LOCATION: 0.190 ELECTRICAL TERMINATION INCHES NOMINAL AND 0.190 MOUNTING FACILITY INCHES NOMINAL OVERALL HEIGHT: 1.000 INCHES NOMINAL
INSULATOR,STANDOFF
NSN 5970-00-117-5276
OVERALL WIDTH: 1.000 INCHES NOMINAL OVERALL LENGTH: 1.000 INCHES NOMINAL MOUNTING BOLT CIRCLE DIAMETER: 0.375 INCHES NOMINAL SCREW THREAD DIAMETER AND LOCATION: 0.164 ELECTRICAL TERMINATION INCHES NOMINAL
914R1733 GENERAL DYNAMICS MISSION SYSTEMS, I
CONFIRMED
INSULATOR,STANDOFF
NSN 5970-00-567-2728
OVERALL WIDTH: 0.750 INCHES NOMINAL THREAD LENGTH: 0.375 INCHES NOMINAL OVERALL LENGTH: 0.750 INCHES NOMINAL DIELECTRIC MATERIAL VOLTAGE RATING PER UNIT THICKNESS: 249.0 VOLTS PER MIL /0.001 INCH/
E1100 ADVANCED TECHNICAL CERAMICS COMPANY
CONFIRMED
INSULATOR,STANDOFF
NSN 5970-00-518-3138
OVERALL WIDTH: 0.750 INCHES NOMINAL OVERALL LENGTH: 0.750 INCHES NOMINAL OVERALL HEIGHT: 1.000 INCHES NOMINAL IDENTIFICATION CODE COLOR: WHITE
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 5970-00-117-5273
OVERALL WIDTH: 1.000 INCHES NOMINAL OVERALL LENGTH: 1.000 INCHES NOMINAL SCREW THREAD DIAMETER AND LOCATION: 0.164 ELECTRICAL TERMINATION INCHES NOMINAL OVERALL HEIGHT: 2.500 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/
Stated characteristics
The codification record's own dimensions and material statements — official, and public by nature.
IDENTIFICATION CODE COLORWHITEFLIS characteristics (MRC)
THREAD LENGTH0.375 INCHES NOMINALFLIS characteristics (MRC)
OVERALL LENGTH1.000 INCHES NOMINALFLIS characteristics (MRC)
OVERALL HEIGHT0.500 INCHES NOMINALFLIS characteristics (MRC)
OVERALL WIDTH0.500 INCHES NOMINALFLIS characteristics (MRC)
THREAD LOCATIONMOUNTING FACILITY AND ELECTRICAL TERMINATIONFLIS characteristics (MRC)
MOUNTING FACILITY TYPE AND QUANTITY1 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 LOCATION0.164 ELECTRICAL TERMINATION INCHES NOMINAL AND 0.164 MOUNTING FACILITY INCHES NOMINALFLIS characteristics (MRC)
THREAD CLASS AND LOCATION2B ELECTRICAL TERMINATION AND 2B MOUNTING FACILITYFLIS characteristics (MRC)
DISTANCE FROM CENTER TO EDGE0.250 INCHES NOMINAL SECOND · 0.250 INCHES NOMINAL FIRSTFLIS characteristics (MRC)
STYLE DESIGNATORPILLARFLIS characteristics (MRC)
DIELECTRIC MATERIAL VOLTAGE RATING PER UNIT THICKNESS249.0 VOLTS PER MIL /0.001 INCH/FLIS characteristics (MRC)
Take the family with you
The whole group as CSV — members, makers, stock numbers and order of use.
Export paused
The monthly allowance for this address is used — the pattern reads as catalogue work, not a line to settle.
Whole-catalogue work is what Stage 1(a) is for: every line human-checked against the cited evidence, discrepancies annotated, back inside 24 hours. Free searching stays free — this gate only catches bulk pulls.
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.