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91920A820 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

91920A820: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 0.250 INCHES NOMINAL IN, material: STEEL COMP 12L14 OVERALL, thread_class: 2B HOLE PERPENDICULAR TO AXIS, thread_length: 0.250 INCHES NOMINAL HOLE PERPENDICULAR TO AXIS IN, style_designator: INTERNALLY THREADED FULL LENGTH, thread_direction: RIGHT-HAND HOLE PERPENDICULAR TO AXIS. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-574-6713, 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
91920A820
NSN: 5340-01-574-6713
FSC: 5340 — Hardware, Commercial
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
length0.250 INCHES NOMINAL IN
materialSTEEL COMP 12L14 OVERALL
thread_class2B HOLE PERPENDICULAR TO AXIS
thread_length0.250 INCHES NOMINAL HOLE PERPENDICULAR TO AXIS IN
style_designatorINTERNALLY THREADED FULL LENGTH
thread_directionRIGHT-HAND HOLE PERPENDICULAR TO AXIS
surface_treatmentZINC OVERALL
width_across_flats0.250 INCHES NOMINAL IN
nominal_thread_size4.0 MILLIMETERS HOLE PERPENDICULAR TO AXIS MM
cross-sectional_shapeHEXAGON
supplementary_featuresHARDNESS-ROCKWELL B80; TENSILE STRENGTH-75,000 PSI
end_item_identification8145-01-534-3597, MULT-TEMP REFR CONT
NSN5340-01-574-6713
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 91920A820 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
•
WIDTH ACROSS FLATS: 0.250 INCHES NOMINAL IN
•
LENGTH: 0.250 INCHES NOMINAL IN
•
THREAD LENGTH: 0.250 INCHES NOMINAL HOLE PERPENDICULAR TO AXIS IN
•
SUPPLEMENTARY FEATURES: HARDNESS-ROCKWELL B80; TENSILE STRENGTH-75,000 PSI
•
STYLE DESIGNATOR: INTERNALLY THREADED FULL LENGTH
•
THREAD DIRECTION: RIGHT-HAND HOLE PERPENDICULAR TO AXIS
•
NOMINAL THREAD SIZE: 4.0 MILLIMETERS HOLE PERPENDICULAR TO AXIS MM
•
CROSS-SECTIONAL SHAPE: HEXAGON
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.250 INCHES NOMINAL IN
LENGTH0.250 INCHES NOMINAL IN
THREAD LENGTH0.250 INCHES NOMINAL HOLE PERPENDICULAR TO AXIS IN
SUPPLEMENTARY FEATURESHARDNESS-ROCKWELL B80; TENSILE STRENGTH-75,000 PSI
STYLE DESIGNATORINTERNALLY THREADED FULL LENGTH
THREAD DIRECTIONRIGHT-HAND HOLE PERPENDICULAR TO AXIS
NOMINAL THREAD SIZE4.0 MILLIMETERS HOLE PERPENDICULAR TO AXIS MM
CROSS-SECTIONAL SHAPEHEXAGON
SURFACE TREATMENTZINC OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYFEMALE THREADED HEX STANDOFFS
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 1
91920A162Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 91920A820?
91920A820 is a STANDOFF,THREADED,SPACING.
What parts can replace 91920A820?
There is 1 known substitute for 91920A820: 91920A162. Substitute compatibility should be verified for your specific system.
What is the NSN for 91920A820?
91920A820 is cataloged in the U.S. Government catalog under NSN 5340-01-574-6713. 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.