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GS1006C6-18A — SCREW,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

GS1006C6-18A: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 718 OVERALL, head_style: FLAT COUNTERSUNK, grip_length: 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN, head_diameter: 0.7409 INCHES MINIMUM AND 0.7604 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-494-3346, 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
GS1006C6-18A
NSN: 5305-01-494-3346
FSC: 5305 — Screws
CAGE: 1EM77 — B & B SPECIALTIES INC DBA GS AEROSPACE DIV GS AEROSPACE (USA)
SPECIFICATIONS
materialNICKEL ALLOY 718 OVERALL
head_styleFLAT COUNTERSUNK
grip_length1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN
head_diameter0.7409 INCHES MINIMUM AND 0.7604 INCHES MAXIMUM IN
thread_length0.578 INCHES NOMINAL IN
fastener_length1.688 INCHES MINIMUM AND 1.718 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
countersink_angle99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
surface_treatmentALUMINUM OVERALL
internal_drive_styleTORX
NSN5305-01-494-3346
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: GS1006C6-18A · 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: 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.688 INCHES MINIMUM AND 1.718 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-83488 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.578 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
SPLINE MAJOR DIAMETER: 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.3750 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
TECHNICAL CHARACTERISTICS
SPLINE MINOR DIAMETER0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN
FASTENER LENGTH1.688 INCHES MINIMUM AND 1.718 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-83488 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.578 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SPLINE MAJOR DIAMETER1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.3750 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN
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 3
11827C6-18ASame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
3M1169C6-18ASame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
TX1026C6-18ASame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 GS1006C6-18A?
GS1006C6-18A is a SCREW,CLOSE TOLERANCE.
What parts can replace GS1006C6-18A?
There are 3 known substitutes for GS1006C6-18A: 11827C6-18A, 3M1169C6-18A, TX1026C6-18A. Substitute compatibility should be verified for your specific system.
What is the NSN for GS1006C6-18A?
GS1006C6-18A is cataloged in the U.S. Government catalog under NSN 5305-01-494-3346. 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.