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12311670 — PLATE,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

12311670: PLATE,MOUNTING.

The PLATE,MOUNTING is a the manufacturer industrial component. Key specifications include shape: RECTANGULAR, width: 1.120 INCHES NOMINAL IN, length: 4.620 INCHES NOMINAL IN, material: STEEL COMP 1020 OR STEEL COMP 1025, thickness: 0.250 INCHES NOMINAL IN, end_item_identification: 2350-01-203-0188. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-139-3591, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
12311670
NSN: 5340-01-139-3591
FSC: 5340 — Hardware, Commercial
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
shapeRECTANGULAR
width1.120 INCHES NOMINAL IN
length4.620 INCHES NOMINAL IN
materialSTEEL COMP 1020 OR STEEL COMP 1025
thickness0.250 INCHES NOMINAL IN
end_item_identification2350-01-203-0188
material_document_and_classificationMIL-S-7952 MIL SPEC SINGLE MATERIAL RESPONSE
NSN5340-01-139-3591
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12311670 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
LENGTH: 4.620 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-7952 MIL SPEC SINGLE MATERIAL RESPONSE
•
SHAPE: RECTANGULAR
•
WIDTH: 1.120 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1020 OR STEEL COMP 1025
•
THICKNESS: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
LENGTH4.620 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7952 MIL SPEC SINGLE MATERIAL RESPONSE
SHAPERECTANGULAR
WIDTH1.120 INCHES NOMINAL IN
END ITEM IDENTIFICATION2350-01-203-0188
MATERIALSTEEL COMP 1020 OR STEEL COMP 1025
THICKNESS0.250 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12311670?
12311670 is a PLATE,MOUNTING.
What is the NSN for 12311670?
12311670 is cataloged in the U.S. Government catalog under NSN 5340-01-139-3591. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.