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68-280 — SCREW,MACHINE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

68-280: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: BINDING, head_height: 0.071 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.275 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN, thread_length: 0.124 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN, fastener_length: 0.186 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-078-4706, 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
68-280
NSN: 5331-00-078-4706
NIINs: 000784706, 011835619
FSC: 5331 — O-ring
CAGE: 97153 — GOODRICH CORPORATION DIV COLLINS AEROSPACE, LANDING SYSTEMS (WHEELS & BRAKES) (USA)
SPECIFICATIONS
head_styleBINDING
head_height0.071 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.275 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
thread_length0.124 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN
fastener_length0.186 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.138 INCHES IN
screw_surface_treatmentNICKEL
thread_quantity_per_inch32
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5331-00-078-4706
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 68-280 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
•
CROSS-SECTIONAL HEIGHT: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 0.359 INCHES MINIMUM AND 0.369 INCHES MAXIMUM IN
•
MATERIAL: RUBBER
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
CENTER HOLE DIAMETER0.359 INCHES MINIMUM AND 0.369 INCHES MAXIMUM IN
MATERIALRUBBER
SUBSTITUTES & CROSS-REFERENCES 2
9219363Reference document
Same NSN cross-reference
Reference document — Secondary reference
9118261Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 68-280?
68-280 is a SCREW,MACHINE.
What parts can replace 68-280?
There are 2 known substitutes for 68-280: 9219363, 9118261. Substitute compatibility should be verified for your specific system.
What is the NSN for 68-280?
68-280 is cataloged in the U.S. Government catalog under NSN 5331-00-078-4706. 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.