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33AF1221-04-05 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

33AF1221-04-05: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OVERALL, head_style: FLAT CHAMFER, head_height: 0.112 INCHES MAXIMUM IN, spline_width: 0.023 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.173 INCHES MINIMUM AND 0.183 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-930-2935, 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
33AF1221-04-05
NSN: 5305-00-930-2935
FSC: 5305 — Screws
CAGE: 35351 — GE AVIATION SYSTEMS LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OVERALL
head_styleFLAT CHAMFER
head_height0.112 INCHES MAXIMUM IN
spline_width0.023 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.173 INCHES MINIMUM AND 0.183 INCHES MAXIMUM IN
thread_length0.246 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
fastener_length0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
hardness_rating70.0 ROCKWELL B MINIMUM AND 90.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
internal_drive_styleSIX SPLINE
spline_major_diameter0.113 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
NSN5305-00-930-2935
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 33AF1221-04-05 · 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
•
SPLINE MINOR DIAMETER: 0.096 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.112 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
•
SPLINE WIDTH: 0.023 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.246 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
•
HARDNESS RATING: 70.0 ROCKWELL B MINIMUM AND 90.0 ROCKWELL C MAXIMUM OVERALL
•
SPLINE MAJOR DIAMETER: 0.113 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.112 INCHES IN
TECHNICAL CHARACTERISTICS
SPLINE MINOR DIAMETER0.096 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN
HEAD HEIGHT0.112 INCHES MAXIMUM IN
FASTENER LENGTH0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
SPLINE WIDTH0.023 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
THREAD LENGTH0.246 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
HARDNESS RATING70.0 ROCKWELL B MINIMUM AND 90.0 ROCKWELL C MAXIMUM OVERALL
SPLINE MAJOR DIAMETER0.113 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.112 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
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
5305PL0146516Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 33AF1221-04-05?
33AF1221-04-05 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 33AF1221-04-05?
There is 1 known substitute for 33AF1221-04-05: 5305PL0146516. Substitute compatibility should be verified for your specific system.
What is the NSN for 33AF1221-04-05?
33AF1221-04-05 is cataloged in the U.S. Government catalog under NSN 5305-00-930-2935. 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.