Mil-spec part number, M83461/1 family
M83461/2-905 O-ring: nitrile (NBR), the AS568-905 size
M83461/2-905 is the AS568-905 O-ring size, 0.414 in (10.52 mm) inside diameter by 0.072 in (1.83 mm) cross-section, in nitrile (NBR) procured to MIL-P-83461/2. The DLA ASSIST and SAE Mobilus records read: Canceled (MIL-P-83461/2); SAE AS83461/2 adopted by DoD (2010). The dash sets the size and the document sets the compound, so an AS568-905 in another compound is not the same part as M83461/2-905. Send the designator exactly as the print reads and we quote it against that document.
- Inside diameter
- 0.414 in10.52 mm, +/- 0.005 in
- Cross-section
- 0.072 in1.83 mm, +/- 0.003 in
- AS568 size
- AS568-905straight-thread boss series
- Document status
- CanceledMIL-P-83461/2
Part facts
| Item | Value |
|---|---|
| Part number | M83461/2-905 |
| NSN | 5331-01-173-3644 and 5331-01-474-6060 (DLA FLIS lists this part number on each; read 2026-10-08) |
| Stock | In stock in Orange, CA |
| Procured to | MIL-P-83461/2 |
| SAE document | SAE AS83461/2 |
| Status | Canceled (MIL-P-83461/2); SAE AS83461/2 adopted by DoD (2010) |
| Base polymer | Nitrile (NBR) |
| AS568 size | AS568-905 |
| CAD for the AS568-905 size | AS568-905 STEP 3D solid, AS568-905 DXF 2D drawing, AS568-905 PDF dimensioned drawing; generated from the AS568 nominal dimensions, so verify against your drawing |
| Dimension | Value | Tolerance |
|---|---|---|
| Inside diameter (ID) | 0.414 in 10.52 mm | +/- 0.005 in (0.13 mm) |
| Cross-section (W) | 0.072 in 1.83 mm | +/- 0.003 in (0.08 mm) |
| Outside diameter (reference) | 0.558 in 14.18 mm | derived: ID + 2 x W |
Millimeter values are converted from the inch table. On MIL-P-83461/2 (30 January 1991) the boss part number takes the three-digit AS568 dash: the sheet assigns its dash numbers on the AS568 dash system, so the part number for the AS568-903 size is M83461/2-903, the sheet's own example. DLA ASSIST records the sheet as inactive for new design from 1997-12-31 (Notice 1) and canceled on 2003-10-01 (Notice 2, which refers future acquisitions to SAE AMS-P-83461/2), DoD's adoption of SAE-AMS-P-83461/2 as withdrawn on 2010-01-20, and SAE-AS83461/2 as adopted the same day and Active (idents 71937, 213940 and 277054, read 2026-10-04).
Same nominal size, other documents
Other part numbers for the AS568-905 size
These part numbers name the AS568-905 nominal size under a different document, so each one is a different compound. They are not interchangeable with M83461/2-905 unless the print or the buyer's engineering allows it.
| Part number | Document | Polymer | Status |
|---|---|---|---|
| AS3208-05 | SAE AS3208 (AMS7276) | FKM | AS3208A stabilized |
| MS29512-05 | MIL-P-5315 (MS29512 boss drawing) | NBR | Canceled (MIL-P-5315); AS29512C current |
| AS9385-05 | SAE AS9385 (AMS7267) | VMQ silicone | Canceled; DoD withdrew its adoption on 2024-02-22, naming SAE-AS9386 |
The base polymer
M83461/2-905 is nitrile (NBR). The Parker® O-Ring Handbook ORD 5700 range published for the NBR family (section 2.2) is -34 C to 100 C. That is the polymer family's range, not this document's requirement; the compound sheet for the qualified grade governs.
Material page: Nitrile (NBR) O-rings. Every document in the family: M83461/1 O-rings.
Nearby M83461/2 part numbers
| Part number | ID in | ID mm | W in | W mm |
|---|---|---|---|---|
| M83461/2-902 | 0.239 | 6.07 | 0.064 | 1.63 |
| M83461/2-903 | 0.301 | 7.65 | 0.064 | 1.63 |
| M83461/2-904 | 0.351 | 8.92 | 0.072 | 1.83 |
| M83461/2-905 | 0.414 | 10.52 | 0.072 | 1.83 |
| M83461/2-906 | 0.468 | 11.89 | 0.078 | 1.98 |
| M83461/2-908 | 0.644 | 16.36 | 0.087 | 2.21 |
| M83461/2-910 | 0.755 | 19.18 | 0.097 | 2.46 |
Frequently asked
What is the AS568 equivalent of M83461/2-905?
M83461/2-905 is the AS568-905 size: 0.414 in (10.52 mm) inside diameter by 0.072 in (1.83 mm) cross-section. The dash sets the size; MIL-P-83461/2 sets the nitrile (NBR) compound. An AS568-905 ring in any other compound has the same dimensions but is not the same part as M83461/2-905.
What is the NSN for M83461/2-905?
DLA's public FLIS data lists M83461/2-905 on NSNs 5331-01-173-3644 and 5331-01-474-6060 (read 2026-10-08). An NSN is the federal catalog's number for the item; your contract or print decides what is ordered.
Is MIL-P-83461/2 still active?
The document status reads: Canceled (MIL-P-83461/2); SAE AS83461/2 adopted by DoD (2010). It comes from the DLA ASSIST and SAE Mobilus records listed under Sources, with the date each was read. A canceled or inactive MIL document can still be the one a print calls out; the SAE document named in the status is the current one, and your print decides which you order to.
How do I order M83461/2-905?
Send the designator exactly as the print reads, with its revision, any suffix letter, the quantity and the paperwork the order needs. M83461/2-905 is quoted and supplied against MIL-P-83461/2 or SAE AS83461/2, in the compound the print calls out, with a certificate of conformance with every order. When the print calls out a QPL-listed specification, the finished molded O-ring, or the material it is molded from, comes from a manufacturer listed on that QPL; Conquest supplies it and is not itself on any QPL. A Conquest representative replies within one business day.
Sources
DLA ASSIST document details, idents 33813 (MIL-P-83461) and 33814 (MIL-P-83461/1), read 2026-09-24, and MIL-P-25732C Notice 1 (1989), read 2026-09-25; SAE Mobilus: AMSP83461 (issued 1998-04-01) and AS83461/1C (revised October 2016, reaffirmed 2021-11-08), read 2026-09-27; DLA ASSIST: MIL-P-83461/2 (ident 71937: the sheet 1991-01-30, Notice 1 1997-12-31, Notice 2 2003-10-01), SAE-AMS-P-83461/2 (ident 213940, Withdrawn 2010-01-20) and SAE-AS83461/2 (ident 277054, Active, adopted 2010-01-20), read 2026-10-04; the NSNs from DLA's public FLIS data (PUB LOG Reference, Identification and Characteristics files, updated 2026-10-01, read 2026-10-08); an NSN is the federal catalog's stock number for an item and does not name or approve a supplier; AS568 dimensions from the Parker O-Ring Handbook ORD 5700, 2021 printing, section IX, AS568 size tables (Series 2-XXX and 3-XXX), pages 9-2 to 9-11, read 2026-10-13; the dash-to-size mapping from the Freudenberg Sealing Technologies, Aerospace Part and Material Cross-Reference brochure (July 2024), pages 3 and 4, read 2026-10-13; the other part numbers' dash-to-size mapping from the MS29512 Revision C sheet (1965-09-01, read 2026-09-27) and MS9385 Revision A sheet (1975-01-17, read 2026-09-27), DLA ASSIST; the other part numbers' statuses from DLA ASSIST document details, ident 5334 (MIL-P-5315), read 2026-09-24; SAE Mobilus current-revision records AS3208A, AS29512C and AS9385A, read 2026-09-27; the SAE-AS9385 withdrawal of adoption notice, DLA ASSIST, read 2026-09-27; the polymers from the Parker O-Ring Handbook ORD 5700A/US, section 8, pages 8-2, 8-4 and 8-5 (read 2026-09-24); Parker O-Ring Handbook ORD 5700A/US, section 2.2, for the polymer family range (read 2026-09-14). Facts are stated in our own words and arrangement; no standard's text or table is reproduced.
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Setting Conquest Seal up as a supplier?
Orders are handled under Conquest Seal's AS9100D quality management system, whose certificate scope includes distribution.
Need M83461/2-905 with certification?
Send the part number as the print reads it, the quantity and the paperwork the order needs. A Conquest representative replies within one business day. A person answers (714) 632-9830, Pacific business hours.
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