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ATT1740D-11 — BOLT,INTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

ATT1740D-11: BOLT,INTERNALLY RELIEVED BODY.

The BOLT,INTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: ROUND W/WRENCH FLATS, head_height: 0.120 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 1.250 INCHES NOMINAL IN, thread_length: 0.427 INCHES MINIMUM AND 0.466 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-042-1753, 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
ATT1740D-11
NSN: 5306-01-042-1753
FSC: 5306 — Bolts
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleROUND W/WRENCH FLATS
head_height0.120 INCHES NOMINAL IN
thread_class3A A
head_diameter1.250 INCHES NOMINAL IN
thread_length0.427 INCHES MINIMUM AND 0.466 INCHES MAXIMUM IN
fastener_length1.830 INCHES NOMINAL IN
shoulder_length1.310 INCHES MINIMUM AND 1.320 INCHES MAXIMUM IN
style_designatorCONCENTRIC HOLE UNTHREADED
thread_directionRIGHT-HAND
shoulder_diameter0.7485 INCHES MINIMUM AND 0.7490 INCHES MAXIMUM IN
surface_treatmentCADMIUM OVERALL
NSN5306-01-042-1753
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: ATT1740D-11 · 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: 0.120 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.830 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: LCP 1067,FSCM 36659 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
CONCENTRIC HOLE DEPTH: 1.190 INCHES NOMINAL IN
•
THREAD LENGTH: 0.427 INCHES MINIMUM AND 0.466 INCHES MAXIMUM IN
•
SHANK UNTHREADED HOLE DIAMETER: 0.111 INCHES NOMINAL FIRST HOLE IN
•
CRITICALITY CODE JUSTIFICATION: AAVH
•
STYLE DESIGNATOR: CONCENTRIC HOLE UNTHREADED
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.120 INCHES NOMINAL IN
FASTENER LENGTH1.830 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONLCP 1067,FSCM 36659 MFR REF SINGLE TREATMENT RESPONSE OVERALL
CONCENTRIC HOLE DEPTH1.190 INCHES NOMINAL IN
THREAD LENGTH0.427 INCHES MINIMUM AND 0.466 INCHES MAXIMUM IN
SHANK UNTHREADED HOLE DIAMETER0.111 INCHES NOMINAL FIRST HOLE IN
CRITICALITY CODE JUSTIFICATIONAAVH
STYLE DESIGNATORCONCENTRIC HOLE UNTHREADED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5626,COND C4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES 1
1292922-105Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 ATT1740D-11?
ATT1740D-11 is a BOLT,INTERNALLY RELIEVED BODY.
What parts can replace ATT1740D-11?
There is 1 known substitute for ATT1740D-11: 1292922-105. Substitute compatibility should be verified for your specific system.
What is the NSN for ATT1740D-11?
ATT1740D-11 is cataloged in the U.S. Government catalog under NSN 5306-01-042-1753. 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.