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Consumables & expendables · Spec-Crosswalk

INSULATOR,WASHER

Stock number · interchangeable / substitutable per the NSN catalogue (FLIS I&S) — every member CONFIRMED

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Part number2 approved sources
You are here · Stock number5970-00-082-4204
Specificationnone cited

Approved sources and substitutes

Every maker's item codified on this stock number, with the catalogue's order of use.

545-7544-003 ROCKWELL COLLINS, INC.

CONFIRMED

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,WASHER

NSN 5970-00-082-4204

INSIDE DIAMETER: 0.116 INCHES NOMINAL OUTSIDE DIAMETER: 0.375 INCHES NOMINAL OVERALL HEIGHT: 0.005 INCHES NOMINAL MATERIAL: OVERALL MICA ASTM D234,CLASS V-2

107218 RAYTHEON COMPANY

CONFIRMED

INSULATOR,WASHER

NSN 5970-00-450-9790

INSIDE DIAMETER: 0.116 INCHES MINIMUM AND 0.125 INCHES MAXIMUM OUTSIDE DIAMETER: 0.365 INCHES MINIMUM AND 0.380 INCHES MAXIMUM OVERALL HEIGHT: 0.004 INCHES MINIMUM AND 0.008 INCHES MAXIMUM MATERIAL: MICA OVERALL

Stated characteristics

The codification record's own dimensions and material statements — official, and public by nature.

INSIDE DIAMETER0.116 INCHES NOMINALFLIS characteristics (MRC)
OUTSIDE DIAMETER0.375 INCHES NOMINALFLIS characteristics (MRC)
OVERALL HEIGHT0.005 INCHES NOMINALFLIS characteristics (MRC)
MATERIALOVERALL MICA ASTM D234,CLASS V-2FLIS characteristics (MRC)
STYLE DESIGNATORROUND, FLATFLIS characteristics (MRC)

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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.

Request a Stage 1(a) dossierTriage the whole list free
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).

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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).
  6. 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).