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181135 — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
Hama · BOLT SCREW
PRODUCT OVERVIEW

181135: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a Hama industrial component. Key specifications include material: STEEL COMP 4340 OVERALL, head_style: HEXAGON, head_height: 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.422 INCHES NOMINAL IN, fastener_length: 2.016 INCHES MINIMUM AND 2.046 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-018-1659, 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
181135
NSN: 5305-00-018-1659
NIINs: 000181659, 013879249
FSC: 5305 — Screws
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 4340 OVERALL
head_styleHEXAGON
head_height0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
thread_class3A A
thread_length0.422 INCHES NOMINAL IN
fastener_length2.016 INCHES MINIMUM AND 2.046 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_between_flats0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
nominal_thread_diameter0.250 INCHES IN
thread_quantity_per_inch28
thread_series_designatorUNF
NSN5305-00-018-1659
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 181135 · Hama ⚠ 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: 0.272 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE 2,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE OR ASTM B633,TYPE 2,CLASS 3 ASSN STD 2ND TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
HARDNESS RATING: 90.0 ROCKWELL B MINIMUM AND 21.7 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A449,GRADE 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.438 INCHES IN
•
HEAD STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.272 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN
FASTENER LENGTH0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE OR ASTM B633,TYPE 2,CLASS 3 ASSN STD 2ND TREATMENT RESPONSE OVERALL
THREAD LENGTH0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
HARDNESS RATING90.0 ROCKWELL B MINIMUM AND 21.7 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A449,GRADE 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.438 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
SPECIFICATION/STANDARD DATA81348-FF-S-85 GOVERNMENT SPECIFICATION AND 96906-MS35298/CANCELED/ GOVERNMENT STANDARD
SUBSTITUTES & CROSS-REFERENCES 6
262209Reference document
Same NSN cross-reference
Reference document — Secondary reference
181659Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
60X3253Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
FF-S-85Reference document
Same NSN cross-reference
Reference document — Identification reference
MS35298-83Reference document
Same NSN cross-reference
Reference document — Secondary reference
214768Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 181135?
181135 is a SCREW,CAP,HEXAGON HEAD manufactured by Hama.
What parts can replace 181135?
There are 6 known substitutes for 181135: 262209, 181659, 60X3253 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 181135?
181135 is cataloged in the U.S. Government catalog under NSN 5305-00-018-1659. This indicates validated use in U.S. government and defense supply chains.
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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.