NSN 5310-00-109-7638 · NIIN 001097638 · Part number S658
Cummins Inc. · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 15434
Government record, cited
NSN 5310-00-109-7638 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-109-7638. Manufacturer of record part number: S658.
Also searched as5310-00-109-7638 ·
5310001097638 ·
NIIN 001097638 ·
00-109-7638 ·
FSC 5310 Nuts and Washers · CAGE 15434 · S658 · 4B4281 · 5310001097638 · S0006580
The Washer,flat, cataloged under National Stock Number 5310-00-109-7638, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Cummins Inc.. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5310-00-109-7638
Primary Part Number
S658
Item Name
Washer,flat
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Cummins Inc.
Status
ACTIVE
Overall Diameter
1.312 INCHES NOMINAL IN
Cross-Sectional Shape Style
RECTANGULAR
Peripheral Shape Style
ROUND
Material
STEEL OVERALL
Center Hole Shape Style
ROUND
Hole Diameter
0.656 INCHES NOMINAL IN
Thickness
0.035 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items10
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5305-00-208-0892100180-5POSSIBLE MATCH
SETSCREW
Possible match (shared part number)Meggitt North Hollywood Inc
5310-00-426-48174B4281POSSIBLE MATCH
WASHER,FLAT
Possible match (shared part number)Caterpillar Inc Div Caterpillar Defense
2990-00-647-0722POSSIBLE MATCH
MUFFLER,EXHAUST
Possible match (shared part number)
4820-00-953-8630S-658QPOSSIBLE MATCH
STEM,NEEDLE VALVE
Possible match (shared part number)Clark-Reliance Llc Dba Jerguson Gage & Valve
4320-01-200-8675POSSIBLE MATCH
PUMP,RECIPROCATING
Possible match (shared part number)
4820-01-283-5005S-65-8 PC6POSSIBLE MATCH
SEAT,VALVE
Possible match (shared part number)Apco/valve & Primer Corp
4820-01-283-5117S-65-8 PC14POSSIBLE MATCH
FLOAT,VALVE
Possible match (shared part number)Apco/valve & Primer Corp
4820-01-283-5129S-65-8 PC7POSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)Apco/valve & Primer Corp
5330-01-315-2249S-65-8POSSIBLE MATCH
RETAINER,PACKING
Possible match (shared part number)Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5310-01-692-35594B-4281POSSIBLE MATCH
WASHER,FLAT
Possible match (shared part number)Caterpillar Inc Div Caterpillar Defense
C/1Advisory reference — outside the item-of-supply concept
Zf Industrieantriebe Witten Gmbh
5310001097638
6/9Informative reference only
E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
S0006580
5/9Secondary reference
Cummins Inc.
Related Parts
5305-00-208-0892POSSIBLE MATCH
SETSCREW
100180-5
5310-00-426-4817POSSIBLE MATCH
WASHER,FLAT
4B4281
2990-00-647-0722POSSIBLE MATCH
MUFFLER,EXHAUST
4820-00-953-8630POSSIBLE MATCH
STEM,NEEDLE VALVE
S-658Q
4320-01-200-8675POSSIBLE MATCH
PUMP,RECIPROCATING
4820-01-283-5005POSSIBLE MATCH
SEAT,VALVE
S-65-8 PC6
4820-01-283-5117POSSIBLE MATCH
FLOAT,VALVE
S-65-8 PC14
4820-01-283-5129POSSIBLE MATCH
DISK,VALVE
S-65-8 PC7
5330-01-315-2249POSSIBLE MATCH
RETAINER,PACKING
S-65-8
5310-01-692-3559POSSIBLE MATCH
WASHER,FLAT
4B-4281
Frequently Asked Questions
What is NSN 5310-00-109-7638?
NSN 5310-00-109-7638 is a Washer,flat, manufactured by Cummins Inc., classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-00-109-7638?
NSN 5310-00-109-7638 has 1 manufacturer part number on file: S658 (Cummins Inc.).
What NSN replaces 5310-00-109-7638?
10 possible matches (shared part number, not a government interchangeability claim): 5305-00-208-0892, 5310-00-426-4817, 2990-00-647-0722. Verify interchangeability with system specifications before substitution.
What are the specifications of S658?
Key specifications for S658: Overall Diameter: 1.312 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; End Item Identification: LOGISTICS SUPPORT VESSEL. 7 specifications are documented in the U.S. Government catalog.
Is NSN 5310-00-109-7638 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.