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91771A839 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

91771A839: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include screw_material: STEEL CORROSION RESISTING, fastener_length: 2.250 INCHES NOMINAL IN, special_features: NUMBER 10, 32 X 2.5, countersink_angle: 82.0 DEGREES NOMINAL, surface_treatment: PASSIVATE, end_item_identification: CIRCUIT PANEL SUBASSEMBLY. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-666-6736, 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
91771A839
NSN: 5305-01-666-6736
FSC: 5305 — Screws
CAGE: 6KT72 — BIRDON AMERICA INC (USA)
SPECIFICATIONS
screw_materialSTEEL CORROSION RESISTING
fastener_length2.250 INCHES NOMINAL IN
special_featuresNUMBER 10, 32 X 2.5
countersink_angle82.0 DEGREES NOMINAL
surface_treatmentPASSIVATE
end_item_identificationCIRCUIT PANEL SUBASSEMBLY
thread_quantity_per_inch32
part_name_assigned_by_controlling_agencyFLAT HEAD SCREW
NSN5305-01-666-6736
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91771A839 · 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
•
FASTENER LENGTH: 2.250 INCHES NOMINAL IN
•
SCREW MATERIAL: STEEL CORROSION RESISTING
•
SURFACE TREATMENT: PASSIVATE
•
COUNTERSINK ANGLE: 82.0 DEGREES NOMINAL
•
THREAD QUANTITY PER INCH: 32
TECHNICAL CHARACTERISTICS
FASTENER LENGTH2.250 INCHES NOMINAL IN
SCREW MATERIALSTEEL CORROSION RESISTING
SPECIAL FEATURESNUMBER 10, 32 X 2.5
SURFACE TREATMENTPASSIVATE
COUNTERSINK ANGLE82.0 DEGREES NOMINAL
PART NAME ASSIGNED BY CONTROLLING AGENCYFLAT HEAD SCREW
END ITEM IDENTIFICATIONCIRCUIT PANEL SUBASSEMBLY
THREAD QUANTITY PER INCH32
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

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 91771A839?
91771A839 is a SCREW,MACHINE.
What is the NSN for 91771A839?
91771A839 is cataloged in the U.S. Government catalog under NSN 5305-01-666-6736. 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.