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211040230 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

211040230: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 502 OR NICKEL ALLOY K-500 OVERALL, head_style: FLAT CHAMFER, head_height: 0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.735 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN, thread_length: 1.096 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-270-3051, 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
211040230
NSN: 5305-01-270-3051
FSC: 5305 — Screws
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY 502 OR NICKEL ALLOY K-500 OVERALL
head_styleFLAT CHAMFER
head_height0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.735 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
thread_length1.096 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
fastener_length1.250 INCHES NOMINAL IN
special_featuresSELF LOCKING
thread_directionRIGHT-HAND
width_across_flats0.375 INCHES NOMINAL IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.500 INCHES IN
NSN5305-01-270-3051
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 211040230 · 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: 0.375 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.250 INCHES NOMINAL IN
•
THREAD LENGTH: 1.096 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
HEAD STYLE: FLAT CHAMFER
•
THREAD DIRECTION: RIGHT-HAND
•
NONDEFINITIVE SPEC/STD DATA: 6 TYPE
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.375 INCHES NOMINAL IN
HEAD HEIGHT0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
FASTENER LENGTH1.250 INCHES NOMINAL IN
THREAD LENGTH1.096 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.500 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
NONDEFINITIVE SPEC/STD DATA6 TYPE
SPECIAL FEATURESSELF LOCKING
INTERNAL DRIVE STYLEHEXAGON
SUBSTITUTES & CROSS-REFERENCES 9
556-6408040-39Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
M1222SN8C320NCLNSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MIL-DTL-1222Reference document
Same NSN cross-reference
Reference document — Identification reference
MILS1222TYII1/2 -13UNC-3AX1-1/4Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
FF-S-86Reference document
Same NSN cross-reference
Reference document — Secondary reference
60-15-4281Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 211040230?
211040230 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 211040230?
There are 9 known substitutes for 211040230: 556-6408040-39, M1222SN8C320NCLN, MIL-DTL-1222 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 211040230?
211040230 is cataloged in the U.S. Government catalog under NSN 5305-01-270-3051. 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.