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91255A261 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

91255A261: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include head_style: BUTTON, head_height: 0.091 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.347 INCHES MINIMUM AND 0.361 INCHES MAXIMUM IN, thread_length: 0.158 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, fastener_length: 0.220 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-252-9160, 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
91255A261
NSN: 5305-01-252-9160
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
head_styleBUTTON
head_height0.091 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.347 INCHES MINIMUM AND 0.361 INCHES MAXIMUM IN
thread_length0.158 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
fastener_length0.220 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
hardness_rating36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
special_featuresCOLOR BLACK
thread_directionRIGHT-HAND
surface_treatmentOXIDE OVERALL
width_across_flats0.125 INCHES NOMINAL IN
internal_drive_styleHEXAGON
NSN5305-01-252-9160
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91255A261 · 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
•
WIDTH ACROSS FLATS: 0.125 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.091 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.220 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.158 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
•
HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
HEAD STYLE: BUTTON
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.125 INCHES NOMINAL IN
HEAD HEIGHT0.091 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN
FASTENER LENGTH0.220 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
THREAD LENGTH0.158 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD STYLEBUTTON
THREAD DIRECTIONRIGHT-HAND
SPECIAL FEATURESCOLOR BLACK
SURFACE TREATMENTOXIDE OVERALL
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES 1
91256A238Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 91255A261?
91255A261 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 91255A261?
There is 1 known substitute for 91255A261: 91256A238. Substitute compatibility should be verified for your specific system.
What is the NSN for 91255A261?
91255A261 is cataloged in the U.S. Government catalog under NSN 5305-01-252-9160. This indicates validated use in U.S. government and defense supply chains.
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