39-46 BARKER & WILLIAMSON
CONFIRMEDINSULATOR,BOWL
NSN 5970-00-157-0730
OUTSIDE DIAMETER: 0.625 INCHES NOMINAL TOP HOLE DIAMETER: 0.156 INCHES NOMINAL FIRST COUNTERBORE DIAMETER: 0.375 INCHES NOMINAL IDENTIFICATION CODE COLOR: WHITE
Consumables & expendables · Spec-Crosswalk
INSULATOR,BOWL
Stock number · interchangeable / substitutable per the NSN catalogue (FLIS I&S) — every member CONFIRMED
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Purchasable unitnone derived yet
Part number3 approved sources
You are here · Stock number5970-00-157-0730
Specificationnone cited
Approved sources and substitutes
Every maker's item codified on this stock number, with the catalogue's order of use.
JANI8 JOINT ARMY-NAVY SPECIFICATIONS
CONFIRMEDINSULATOR,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
MIL-I-23264/16 MILITARY SPECIFICATIONS
CONFIRMEDINSULATOR,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
Stated characteristics
The codification record's own dimensions and material statements — official, and public by nature.
IDENTIFICATION CODE COLORBROWNFLIS characteristics (MRC)
INSIDE DIAMETER0.156 INCHES NOMINALFLIS characteristics (MRC)
OUTSIDE DIAMETER0.625 INCHES NOMINALFLIS characteristics (MRC)
OVERALL HEIGHT0.625 INCHES NOMINALFLIS characteristics (MRC)
SHANK OUTSIDE DIAMETER0.344 INCHES NOMINALFLIS characteristics (MRC)
SURFACE FINISHGLAZED OVERALLFLIS characteristics (MRC)
TOP DIAMETER0.500 INCHES NOMINALFLIS characteristics (MRC)
SHANK HEIGHT0.250 INCHES NOMINALFLIS characteristics (MRC)
MATERIALCERAMIC CLEANING WIREFLIS characteristics (MRC)
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-I-10, GRADE L422 MIL SPEC SINGLE MATERIAL RESPONSE CLEANING WIREFLIS characteristics (MRC)
UNABLE TO DECODEUNABLE TO DECODEFLIS characteristics (MRC)
STYLE DESIGNATORSHOULDERFLIS characteristics (MRC)
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The whole group as CSV — members, makers, stock numbers and order of use.
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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.
Source: DLA Logistics Information Services (FLIS) · cycle 2026-0 · official codification
This crosswalk identifies candidate equivalents with cited evidence. It is not an airworthiness approval. Substitution decisions remain subject to your organisation’s procurement and engineering approval process and the governing maintenance data (AMM/CMM/SRM/CML/OMAT).