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BS120057 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

BS120057: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 2.875 INCHES NOMINAL IN, material: ALUMINUM ALLOY 2024 OVERALL, special_features: PREPARE HOLE PER NASM 33537, INSTALL MS21209C062 INSERT EACH END, style_designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS, surface_treatment: ANODIZE OVERALL, width_across_flats: 0.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-584-1653, 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
BS120057
NSN: 5340-01-584-1653
FSC: 5340 — Hardware, Commercial
CAGE: 97499 — BELL TEXTRON INC (USA)
SPECIFICATIONS
length2.875 INCHES NOMINAL IN
materialALUMINUM ALLOY 2024 OVERALL
special_featuresPREPARE HOLE PER NASM 33537, INSTALL MS21209C062 INSERT EACH END
style_designatorLEFT INTERNAL AND RIGHT INTERNAL THREADS
surface_treatmentANODIZE OVERALL
width_across_flats0.250 INCHES NOMINAL IN
cross-sectional_shapeHEXAGON
end_item_identificationUH-1Y
part_name_assigned_by_controlling_agencySTAND-OFF, SPACER, ELECTRICAL FOR PANELS AND BOARDS
NSN5340-01-584-1653
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: BS120057 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: 2.875 INCHES NOMINAL IN
•
STYLE DESIGNATOR: LEFT INTERNAL AND RIGHT INTERNAL THREADS
•
CROSS-SECTIONAL SHAPE: HEXAGON
•
SURFACE TREATMENT: ANODIZE OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.250 INCHES NOMINAL IN
LENGTH2.875 INCHES NOMINAL IN
STYLE DESIGNATORLEFT INTERNAL AND RIGHT INTERNAL THREADS
CROSS-SECTIONAL SHAPEHEXAGON
SPECIAL FEATURESPREPARE HOLE PER NASM 33537, INSTALL MS21209C062 INSERT EACH END
SURFACE TREATMENTANODIZE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYSTAND-OFF, SPACER, ELECTRICAL FOR PANELS AND BOARDS
END ITEM IDENTIFICATIONUH-1Y
MATERIALALUMINUM ALLOY 2024 OVERALL
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
120-057-23Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 BS120057?
BS120057 is a STANDOFF,THREADED,SPACING.
What parts can replace BS120057?
There is 1 known substitute for BS120057: 120-057-23. Substitute compatibility should be verified for your specific system.
What is the NSN for BS120057?
BS120057 is cataloged in the U.S. Government catalog under NSN 5340-01-584-1653. This indicates validated use in U.S. government and defense supply chains.
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