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PartsTable / COMPONENT / 2253-1-20
2253-1-20 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The SETSCREW is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEADLESS (SETSCREW), point_style: OVAL, thread_class: 3A A, thread_length: 0.655 INCHES MINIMUM AND 0.675 INCHES MAXIMUM IN, fastener_length: 0.750 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-415-8871, 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
2253-1-20
NSN: 5305-01-415-8871
FSC: 5305
CAGE: 94874 — DROITCOUR CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEADLESS (SETSCREW)
point_styleOVAL
thread_class3A A
thread_length0.655 INCHES MINIMUM AND 0.675 INCHES MAXIMUM IN
fastener_length0.750 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.094 INCHES NOMINAL IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.190 INCHES IN
thread_quantity_per_inch32
NSN5305-01-415-8871
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2253-1-20 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
THREAD CLASS: 3A A
•
INTERNAL DRIVE STYLE: HEXAGON
•
THREAD QUANTITY PER INCH: 32
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5640 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD SERIES DESIGNATOR: UNF
•
THREAD LENGTH: 0.655 INCHES MINIMUM AND 0.675 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3A A
INTERNAL DRIVE STYLEHEXAGON
THREAD QUANTITY PER INCH32
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5640 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATORUNF
THREAD LENGTH0.655 INCHES MINIMUM AND 0.675 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.190 INCHES IN
MATERIALSTEEL OVERALL
FASTENER LENGTH0.750 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.094 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
900039-001Interchangeable
interchangeable cross-reference
interchangeable
PTT82Interchangeable
interchangeable cross-reference
interchangeable
NLW25-25Interchangeable
interchangeable cross-reference
interchangeable
042142Interchangeable
interchangeable cross-reference
interchangeable
0042142-0Interchangeable
interchangeable cross-reference
interchangeable
0042142Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2253-1-20?
2253-1-20 is a SETSCREW.
What parts can replace 2253-1-20?
There are 17 known substitutes for 2253-1-20: 900039-001, PTT82, NLW25-25 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2253-1-20?
2253-1-20 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-415-8871. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026