Consumables & expendables · Spec-Crosswalk

MIL-I-631 Type G Class 1

MIL MIL-I-631 · G · 1

No qualified-products (QPL / ASSIST) export loaded for this specification yet — members below come from codification and manufacturer sources; QPL membership lands with the data cycle.

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Other lines of MIL MIL-I-631

The same document's other types, classes and grades — each its own crosswalk family.

34 members, grouped by the makers' own part-number structure — open a family to see its graded, cited rows.

67A28C719 NAVAL AIR SYSTEMS COMMAND MANAGED

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-00-152-4300 →OVERALL WIDTH: 2.670 INCHES NOMINAL OVERALL LENGTH: 4.100 INCHES NOMINAL OVERALL HEIGHT: 0.010 INCHES NOMINAL MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

113B3722P1 BAE SYSTEMS CONTROLS INC.

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-00-410-4994 →INSIDE DIAMETER: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM OUTSIDE DIAMETER: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM OVERALL HEIGHT: 0.010 INCHES NOMINAL MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

144A9738P1 BAE SYSTEMS CONTROLS INC.

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-01-130-7629 →INSIDE DIAMETER: 1.060 INCHES MINIMUM AND 1.120 INCHES MAXIMUM OUTSIDE DIAMETER: 1.660 INCHES MINIMUM AND 1.670 INCHES MAXIMUM OVERALL HEIGHT: 0.002 INCHES NOMINAL MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL

FLIS · DLA Logistics Information Services (FLIS) · 2026-09

144A9738P2 BAE SYSTEMS CONTROLS INC.

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-01-130-7630 →INSIDE DIAMETER: 0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM OUTSIDE DIAMETER: 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM OVERALL HEIGHT: 0.002 INCHES NOMINAL MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL

FLIS · DLA Logistics Information Services (FLIS) · 2026-09

144A9738P3 PHOENIX SPECIALTY MFG CO INC MODERN

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-01-131-2938 →INSIDE DIAMETER: 0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM OUTSIDE DIAMETER: 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM OVERALL HEIGHT: 0.005 INCHES NOMINAL MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL

FLIS · DLA Logistics Information Services (FLIS) · 2026-09

144A9738P3 BAE SYSTEMS CONTROLS INC.

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-01-131-2938 →INSIDE DIAMETER: 0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM OUTSIDE DIAMETER: 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM OVERALL HEIGHT: 0.005 INCHES NOMINAL MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL

FLIS · DLA Logistics Information Services (FLIS) · 2026-09

144A9738P4 SPECIALTY WASHER CO OF SOUTH CAROLI

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-01-131-9479 →INSIDE DIAMETER: 0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM OUTSIDE DIAMETER: 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM OVERALL HEIGHT: 0.010 INCHES NOMINAL MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL

FLIS · DLA Logistics Information Services (FLIS) · 2026-09

144A9738P4 BAE SYSTEMS CONTROLS INC.

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-01-131-9479 →INSIDE DIAMETER: 0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM OUTSIDE DIAMETER: 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM OVERALL HEIGHT: 0.010 INCHES NOMINAL MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL

FLIS · DLA Logistics Information Services (FLIS) · 2026-09

194-19 TELEDYNE DEFENSE ELECTRONICS, LLC

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-01-362-3705 →OVERALL WIDTH: 0.156 INCHES NOMINAL OVERALL LENGTH: 0.256 INCHES NOMINAL FIRST HOLE DIAMETER: 0.094 INCHES NOMINAL OVERALL HEIGHT: 0.011 INCHES MINIMUM AND 0.017 INCHES MAXIMUM

FLIS · DLA Logistics Information Services (FLIS) · 2026-08

412R982H02 NORTHROP GRUMMAN SYSTEMS CORPORATIO

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-00-567-0569 →OVERALL WIDTH: 3.344 INCHES NOMINAL OVERALL LENGTH: 6.719 INCHES NOMINAL OVERALL HEIGHT: 0.005 INCHES NOMINAL MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

423-202281-2 RAYTHEON COMPANY

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-00-231-2758 →OVERALL WIDTH: 1.560 INCHES NOMINAL OVERALL LENGTH: 11.420 INCHES NOMINAL OVERALL HEIGHT: 0.008 INCHES NOMINAL MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

928C612P1 BAE SYSTEMS CONTROLS INC.

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-00-587-4821 →OVERALL WIDTH: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM OVERALL LENGTH: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM FIRST HOLE DIAMETER: 0.097 INCHES MINIMUM AND 0.102 INCHES MAXIMUM OVERALL HEIGHT: 0.003 INCHES NOMINAL

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

139136 GE AVIATION SYSTEMS LLC

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-00-022-4619 →OUTSIDE DIAMETER: 0.330 INCHES NOMINAL OVERALL HEIGHT: 0.009 INCHES MINIMUM AND 0.011 INCHES MAXIMUM MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL MATERIAL DOCUMENT AND CLASSIFICATION: MIL-I-631, TYPE G, CLASS 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

139136-01 GE AVIATION SYSTEMS LLC

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-00-022-4619 →OUTSIDE DIAMETER: 0.330 INCHES NOMINAL OVERALL HEIGHT: 0.009 INCHES MINIMUM AND 0.011 INCHES MAXIMUM MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL MATERIAL DOCUMENT AND CLASSIFICATION: MIL-I-631, TYPE G, CLASS 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

166271-02 GE AVIATION SYSTEMS LLC

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-01-169-3893 →OVERALL WIDTH: 0.120 INCHES NOMINAL OVERALL LENGTH: 0.530 INCHES NOMINAL FIRST HOLE DIAMETER: 0.034 INCHES MINIMUM AND 0.038 INCHES MAXIMUM SECOND HOLE DIAMETER: 0.034 INCHES MINIMUM AND 0.038 INCHES MAXIMUM

FLIS · DLA Logistics Information Services (FLIS) · 2026-08

970248 NAVAIR AND NAVSEA MANAGED ORIGINAL

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-00-249-2496 →OVERALL WIDTH: 1.750 INCHES NOMINAL OVERALL LENGTH: 2.500 INCHES NOMINAL OVERALL HEIGHT: 0.010 INCHES NOMINAL MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

1382781 LOCKHEED MARTIN CORPORATION

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-00-063-8481 →OUTSIDE DIAMETER: 2.219 INCHES MINIMUM AND 2.281 INCHES MAXIMUM OVERALL HEIGHT: 0.003 INCHES NOMINAL MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL MATERIAL DOCUMENT AND CLASSIFICATION: MIL-I-631, TYPE G, CLASS 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

1853786 NORTHROP GRUMMAN SYSTEMS CORPORATIO

CONFIRMED

Codified interchangeability (FLIS I&S)

qualified at 2 sites: 03956 · 21877

NSN 5970-00-003-5331 →OUTSIDE DIAMETER: 5.240 INCHES NOMINAL FIRST HOLE DIAMETER: 2.750 INCHES NOMINAL SECOND HOLE DIAMETER: 0.125 INCHES NOMINAL OVERALL HEIGHT: 0.010 INCHES NOMINAL

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

2553920 HONEYWELL INTERNATIONAL INC.

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-00-554-4585 →OVERALL WIDTH: 2.750 INCHES NOMINAL OVERALL LENGTH: 3.547 INCHES NOMINAL OVERALL HEIGHT: 0.005 INCHES NOMINAL MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

3004083-1 RAYTHEON COMPANY

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-01-362-3705 →OVERALL WIDTH: 0.156 INCHES NOMINAL OVERALL LENGTH: 0.256 INCHES NOMINAL FIRST HOLE DIAMETER: 0.094 INCHES NOMINAL OVERALL HEIGHT: 0.011 INCHES MINIMUM AND 0.017 INCHES MAXIMUM

FLIS · DLA Logistics Information Services (FLIS) · 2026-08

10134086 NIMIKKEISTOKESKUS NCB FINLAND

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-01-130-7629 →INSIDE DIAMETER: 1.060 INCHES MINIMUM AND 1.120 INCHES MAXIMUM OUTSIDE DIAMETER: 1.660 INCHES MINIMUM AND 1.670 INCHES MAXIMUM OVERALL HEIGHT: 0.002 INCHES NOMINAL MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL

FLIS · DLA Logistics Information Services (FLIS) · 2026-09

10134087 NIMIKKEISTOKESKUS NCB FINLAND

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-01-130-7630 →INSIDE DIAMETER: 0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM OUTSIDE DIAMETER: 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM OVERALL HEIGHT: 0.002 INCHES NOMINAL MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL

FLIS · DLA Logistics Information Services (FLIS) · 2026-09

10134088 NIMIKKEISTOKESKUS NCB FINLAND

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-01-131-2938 →INSIDE DIAMETER: 0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM OUTSIDE DIAMETER: 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM OVERALL HEIGHT: 0.005 INCHES NOMINAL MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL

FLIS · DLA Logistics Information Services (FLIS) · 2026-09

10134093 NIMIKKEISTOKESKUS NCB FINLAND

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-01-131-9479 →INSIDE DIAMETER: 0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM OUTSIDE DIAMETER: 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM OVERALL HEIGHT: 0.010 INCHES NOMINAL MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL

FLIS · DLA Logistics Information Services (FLIS) · 2026-09

11014287-2 U S ARMY ARMAMENT RESEARCH &

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-00-756-3624 →DIELECTRIC MATERIAL VOLTAGE RATING PER UNIT THICKNESS: 1400.0 VOLTS PER MIL /0.001 INCH/ INSIDE DIAMETER: 0.256 INCHES NOMINAL OUTSIDE DIAMETER: 0.875 INCHES NOMINAL OVERALL HEIGHT: 0.0035 INCHES NOMINAL

FLIS · DLA Logistics Information Services (FLIS) · 2026-08

11014287-2 SPRINGFIELD ARMORY

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-00-756-3624 →DIELECTRIC MATERIAL VOLTAGE RATING PER UNIT THICKNESS: 1400.0 VOLTS PER MIL /0.001 INCH/ INSIDE DIAMETER: 0.256 INCHES NOMINAL OUTSIDE DIAMETER: 0.875 INCHES NOMINAL OVERALL HEIGHT: 0.0035 INCHES NOMINAL

FLIS · DLA Logistics Information Services (FLIS) · 2026-08

17000004510 ELBITAMERICA, INC.

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 5970-00-809-9581 →OVERALL WIDTH: 0.234 INCHES NOMINAL OVERALL LENGTH: 1.266 INCHES NOMINAL FIRST HOLE DIAMETER: 0.109 INCHES NOMINAL SECOND HOLE DIAMETER: 0.109 INCHES NOMINAL

FLIS · DLA Logistics Information Services (FLIS) · 2026-08

limit reached — 6 more held · contact atas.aero for a breakdown

Watch this family. We’ll alert you when its restriction status changes or a new qualified alternative lands.
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.

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).