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718979-1 — PRINTED WIRING BOARD

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

718979-1: PRINTED WIRING BOARD.

The PRINTED WIRING BOARD is a the manufacturer industrial component. Key specifications include material: STEEL, design_type: SOLID, bore_diameter: 0.1020 INCHES MINIMUM AND 0.1030 INCHES MAXIMUM IN, overall_width: 3.690 INCHES NOMINAL IN, overall_height: 0.1900 INCHES NOMINAL IN, overall_length: 4.800 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-809-8053, 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
718979-1
NSN: 5340-00-809-8053
NIINs: 008098053, 013436611
FSC: 5340 — Hardware, Commercial
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
materialSTEEL
design_typeSOLID
bore_diameter0.1020 INCHES MINIMUM AND 0.1030 INCHES MAXIMUM IN
overall_width3.690 INCHES NOMINAL IN
overall_height0.1900 INCHES NOMINAL IN
overall_length4.800 INCHES NOMINAL IN
special_featuresMATL-STEEL AMS5612
style_designatorSEAT
first_step_diameter0.3900 INCHES MINIMUM AND 0.4000 INCHES MAXIMUM IN
chamfer_angle_in_deg23.0
counterbore_diameter0.2173 INCHES MINIMUM AND 0.2193 INCHES MAXIMUM IN
countersink_diameter0.1350 INCHES MINIMUM AND 0.1500 INCHES MAXIMUM IN
NSN5340-00-809-8053
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 718979-1 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
•
COUNTERSINK ANGLE IN DEG: 90.0
•
FIRST STEP DIAMETER: 0.3900 INCHES MINIMUM AND 0.4000 INCHES MAXIMUM IN
•
MATERIAL HARDNESS RATING: 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
•
COUNTERSINK DIAMETER: 0.1350 INCHES MINIMUM AND 0.1500 INCHES MAXIMUM IN
•
DISTANCE FROM END TO FIRST STEP: 0.1420 INCHES MINIMUM AND 0.1460 INCHES MAXIMUM IN
•
DESIGN TYPE: SOLID
•
STYLE DESIGNATOR: SEAT
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.1900 INCHES NOMINAL IN
COUNTERSINK ANGLE IN DEG90.0
FIRST STEP DIAMETER0.3900 INCHES MINIMUM AND 0.4000 INCHES MAXIMUM IN
MATERIAL HARDNESS RATING30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
COUNTERSINK DIAMETER0.1350 INCHES MINIMUM AND 0.1500 INCHES MAXIMUM IN
DISTANCE FROM END TO FIRST STEP0.1420 INCHES MINIMUM AND 0.1460 INCHES MAXIMUM IN
DESIGN TYPESOLID
STYLE DESIGNATORSEAT
COUNTERBORE DIAMETER0.2173 INCHES MINIMUM AND 0.2193 INCHES MAXIMUM IN
SPECIAL FEATURESMATL-STEEL AMS5612
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 718979-1?
718979-1 is a PRINTED WIRING BOARD.
What is the NSN for 718979-1?
718979-1 is cataloged in the U.S. Government catalog under NSN 5340-00-809-8053. 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.