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91772A548 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

91772A548: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: BUTTON, head_height: 0.175 INCHES NOMINAL IN, head_diameter: 0.492 INCHES NOMINAL IN, thread_length: 2.0 INCHES NOMINAL IN, screw_material: STEEL COMP 316, fastener_length: 2.0 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-609-3284, 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
91772A548
NSN: 5305-01-609-3284
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
head_styleBUTTON
head_height0.175 INCHES NOMINAL IN
head_diameter0.492 INCHES NOMINAL IN
thread_length2.0 INCHES NOMINAL IN
screw_materialSTEEL COMP 316
fastener_length2.0 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE III
end_item_identificationASSY, MAIN HOUSING
nominal_thread_diameter0.25 INCHES IN
thread_quantity_per_inch20
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-01-609-3284
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91772A548 · 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: 0.175 INCHES NOMINAL IN
•
FASTENER LENGTH: 2.0 INCHES NOMINAL IN
•
THREAD LENGTH: 2.0 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.25 INCHES IN
•
HEAD STYLE: BUTTON
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW MATERIAL: STEEL COMP 316
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE III
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.175 INCHES NOMINAL IN
FASTENER LENGTH2.0 INCHES NOMINAL IN
THREAD LENGTH2.0 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.25 INCHES IN
HEAD STYLEBUTTON
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL COMP 316
INTERNAL DRIVE STYLECROSS RECESS TYPE III
PART NAME ASSIGNED BY CONTROLLING AGENCYSCREW, PAN HEAD
END ITEM IDENTIFICATIONASSY, MAIN HOUSING
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91772A548?
91772A548 is a SCREW,MACHINE.
What is the NSN for 91772A548?
91772A548 is cataloged in the U.S. Government catalog under NSN 5305-01-609-3284. 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.