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91829A309 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

91829A309: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, head_style: FLAT FILLISTER, head_height: 0.219 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.500 INCHES NOMINAL IN, thread_length: 0.438 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-498-8775, 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
91829A309
NSN: 5305-01-498-8775
FSC: 5305 — Screws
CAGE: 2V507 — MCMASTER-CARR SUPPLY COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
head_styleFLAT FILLISTER
head_height0.219 INCHES NOMINAL IN
thread_class2A A
head_diameter0.500 INCHES NOMINAL IN
thread_length0.438 INCHES NOMINAL IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.938 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
shoulder_length0.500 INCHES MINIMUM AND 0.502 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.374 INCHES MINIMUM AND 0.375 INCHES MAXIMUM FIRST SHOULDER IN
internal_drive_styleSLOT
NSN5305-01-498-8775
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91829A309 · 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: 0.219 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.938 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.500 INCHES MINIMUM AND 0.502 INCHES MAXIMUM FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.374 INCHES MINIMUM AND 0.375 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.438 INCHES NOMINAL IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: FLAT FILLISTER
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.219 INCHES NOMINAL IN
FASTENER LENGTH0.938 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
SHOULDER LENGTH0.500 INCHES MINIMUM AND 0.502 INCHES MAXIMUM FIRST SHOULDER IN
SHOULDER DIAMETER0.374 INCHES MINIMUM AND 0.375 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.438 INCHES NOMINAL IN
SHOULDER SHAPEROUND FIRST SHOULDER
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEFLAT FILLISTER
THREAD DIRECTIONRIGHT-HAND
INTERNAL DRIVE STYLESLOT
SUBSTITUTES & CROSS-REFERENCES 1
9548Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91829A309?
91829A309 is a SCREW,SHOULDER.
What parts can replace 91829A309?
There is 1 known substitute for 91829A309: 9548. Substitute compatibility should be verified for your specific system.
What is the NSN for 91829A309?
91829A309 is cataloged in the U.S. Government catalog under NSN 5305-01-498-8775. 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.