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B183-1 — KEY,SOCKET HEAD SCREW

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

B183-1: KEY,SOCKET HEAD SCREW.

The KEY,SOCKET HEAD SCREW is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT CHAMFER, head_height: 3.88 MILLIMETERS MINIMUM AND 4.00 MILLIMETERS MAXIMUM MM, head_diameter: 6.80 MILLIMETERS MINIMUM AND 7.00 MILLIMETERS MAXIMUM MM, thread_length: 23.5 MILLIMETERS NOMINAL MM, overall_length: 9.0 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-152-5856, 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
B183-1
NSN: 5330-00-152-5856
NIINs: 001525856, 015216770, 015881092, 016719812
FSC: 5330 — Packing and Gasket Materials
CAGE: 61208 — TWIN DISC, INCORPORATED DBA TWIN DISC MID-ATLANTIC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT CHAMFER
head_height3.88 MILLIMETERS MINIMUM AND 4.00 MILLIMETERS MAXIMUM MM
head_diameter6.80 MILLIMETERS MINIMUM AND 7.00 MILLIMETERS MAXIMUM MM
thread_length23.5 MILLIMETERS NOMINAL MM
overall_length9.0 INCHES NOMINAL IN
fastener_length25.0 MILLIMETERS NOMINAL MM
special_featuresBLUE HANDLE
style_designatorTEE HANDLE
thread_directionRIGHT-HAND
surface_treatmentOXIDE OVERALL
width_across_flats4.020 MILLIMETERS MINIMUM AND 4.084 MILLIMETERS MAXIMUM MM
NSN5330-00-152-5856
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: B183-1 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
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SUPPLEMENTARY FEATURES: CROSS-SECTIONAL SHAPE STYLE:NO.195 IRREGULAR SHAPE FROM FIIG A03200
TECHNICAL CHARACTERISTICS
SUPPLEMENTARY FEATURESCROSS-SECTIONAL SHAPE STYLE:NO.195 IRREGULAR SHAPE FROM FIIG A03200
SPECIAL FEATURESSTYLE DESIGNATOR:NO.60 IRREGULAR SHAPE FROM FIIG A03200
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 B183-1?
B183-1 is a KEY,SOCKET HEAD SCREW.
What is the NSN for B183-1?
B183-1 is cataloged in the U.S. Government catalog under NSN 5330-00-152-5856. 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.