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12916978 — BRACKET,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

12916978: BRACKET,MOUNTING.

The BRACKET,MOUNTING is a the manufacturer industrial component. Key specifications include material: STEEL, overall_width: 2.000 INCHES NOMINAL IN, overall_height: 0.866 INCHES NOMINAL IN, overall_length: 2.380 INCHES NOMINAL IN, special_features: ONE SLOT,0.388 IN. MIN AND 0.412 IN.

MAX W,0.640 IN. LG IN, surface_treatment: PASSIVATE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-368-2586, 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
12916978
NSN: 5340-01-368-2586
FSC: 5340 — Hardware, Commercial
CAGE: 19200 — COMBAT CAPABILITIES DEVELOPMENT COMMAND (CCDC) ARMAMENTS CENTER DBA CCDC DIV LOGISTICS RESEARCH AND ENGINEERING DIRECTORATE (USA)
SPECIFICATIONS
materialSTEEL
overall_width2.000 INCHES NOMINAL IN
overall_height0.866 INCHES NOMINAL IN
overall_length2.380 INCHES NOMINAL IN
special_featuresONE SLOT,0.388 IN. MIN AND 0.412 IN. MAX W,0.640 IN. LG IN
surface_treatmentPASSIVATE
mounting_hole_typeTHREADED
mounting_hole_diameter0.3125 INCHES NOMINAL IN
mounting_hole_quantity2
material_document_and_classificationASTM A743 COMP CB-30 ASSN STD SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classificationMIL-STD-171 FINISH 5.4.1 MIL STD SINGLE TREATMENT RESPONSE
NSN5340-01-368-2586
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12916978 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
•
MOUNTING HOLE QUANTITY: 2
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-STD-171 FINISH 5.4.1 MIL STD SINGLE TREATMENT RESPONSE
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A743 COMP CB-30 ASSN STD SINGLE MATERIAL RESPONSE
•
MOUNTING HOLE DIAMETER: 0.3125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY2
OVERALL HEIGHT0.866 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-STD-171 FINISH 5.4.1 MIL STD SINGLE TREATMENT RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A743 COMP CB-30 ASSN STD SINGLE MATERIAL RESPONSE
MOUNTING HOLE DIAMETER0.3125 INCHES NOMINAL IN
OVERALL LENGTH2.380 INCHES NOMINAL IN
OVERALL WIDTH2.000 INCHES NOMINAL IN
SPECIAL FEATURESONE SLOT,0.388 IN. MIN AND 0.412 IN. MAX W,0.640 IN. LG IN
SURFACE TREATMENTPASSIVATE
MATERIALSTEEL
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12916978?
12916978 is a BRACKET,MOUNTING.
What is the NSN for 12916978?
12916978 is cataloged in the U.S. Government catalog under NSN 5340-01-368-2586. 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.