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91115A253 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

91115A253: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 1.25 INCHES NOMINAL IN, special_features: 10-32 THREAD, style_designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS, cross-sectional_shape: HEXAGON, cross-sectional_width: 0.3125 INCHES NOMINAL IN, cross-sectional_length: 1.25 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-686-7744, 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
91115A253
NSN: 5340-01-686-7744
FSC: 5340 — Hardware, Commercial
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
length1.25 INCHES NOMINAL IN
special_features10-32 THREAD
style_designatorLEFT INTERNAL AND RIGHT INTERNAL THREADS
cross-sectional_shapeHEXAGON
cross-sectional_width0.3125 INCHES NOMINAL IN
cross-sectional_length1.25 INCHES NOMINAL IN
right_counterbore_depth0.5 INCHES NOMINAL IN
left_counterbore_diameter0.5 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencySTANDOFF
NSN5340-01-686-7744
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 91115A253 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: 1.25 INCHES NOMINAL IN
•
CROSS-SECTIONAL WIDTH: 0.3125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: LEFT INTERNAL AND RIGHT INTERNAL THREADS
•
CROSS-SECTIONAL LENGTH: 1.25 INCHES NOMINAL IN
•
RIGHT COUNTERBORE DEPTH: 0.5 INCHES NOMINAL IN
•
LEFT COUNTERBORE DIAMETER: 0.5 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE: HEXAGON
TECHNICAL CHARACTERISTICS
LENGTH1.25 INCHES NOMINAL IN
CROSS-SECTIONAL WIDTH0.3125 INCHES NOMINAL IN
STYLE DESIGNATORLEFT INTERNAL AND RIGHT INTERNAL THREADS
CROSS-SECTIONAL LENGTH1.25 INCHES NOMINAL IN
RIGHT COUNTERBORE DEPTH0.5 INCHES NOMINAL IN
LEFT COUNTERBORE DIAMETER0.5 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPEHEXAGON
SPECIAL FEATURES10-32 THREAD
PART NAME ASSIGNED BY CONTROLLING AGENCYSTANDOFF
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91115A253?
91115A253 is a STANDOFF,THREADED,SPACING.
What is the NSN for 91115A253?
91115A253 is cataloged in the U.S. Government catalog under NSN 5340-01-686-7744. 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.