PartsTable
Technical Data Sheet
91255A190 ✓ 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 SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include color: BLACK OVERALL, material: STEEL OVERALL, head_style: BUTTON, head_height: 0.077 INCHES MINIMUM AND 0.087 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.298 INCHES MINIMUM AND 0.312 INCHES MAXIMUM 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 5305-01-432-2437, 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
91255A190
NSN: 5305-01-432-2437
FSC: 5305
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
colorBLACK OVERALL
materialSTEEL OVERALL
head_styleBUTTON
head_height0.077 INCHES MINIMUM AND 0.087 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.298 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
thread_length0.188 INCHES MAXIMUM IN
fastener_length0.250 INCHES NOMINAL IN
hardness_rating38.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentOXIDE OVERALL
width_across_flats0.094 INCHES NOMINAL IN
NSN5305-01-432-2437
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91255A190 · 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
HEAD HEIGHT: 0.077 INCHES MINIMUM AND 0.087 INCHES MAXIMUM IN
MINIMUM TENSILE STRENGTH: 137000 POUNDS PER SQUARE INCH LBS
MATERIAL: STEEL OVERALL
HEAD STYLE: BUTTON
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
SURFACE TREATMENT: OXIDE OVERALL
HARDNESS RATING: 38.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
HEAD HEIGHT0.077 INCHES MINIMUM AND 0.087 INCHES MAXIMUM IN
MINIMUM TENSILE STRENGTH137000 POUNDS PER SQUARE INCH LBS
MATERIALSTEEL OVERALL
HEAD STYLEBUTTON
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD DIAMETER0.164 INCHES IN
SURFACE TREATMENTOXIDE OVERALL
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM OVERALL
COLORBLACK OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM F835 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
41309Interchangeable
interchangeable cross-reference
interchangeable
RT6219Interchangeable
interchangeable cross-reference
interchangeable
309MGInterchangeable
interchangeable cross-reference
interchangeable
81022Interchangeable
interchangeable cross-reference
interchangeable
22FP2-832Interchangeable
interchangeable cross-reference
interchangeable
C29-2CLASS52-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 91255A190?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 91255A190?
91255A190 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 91255A190?
There are 9 known substitutes for 91255A190: 41309, RT6219, 309MG and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 91255A190?
91255A190 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-432-2437. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 91255A190