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Technical Data Sheet
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181240 — SCREW,ASSEMBLED WASHER

✓ Government record, cited
Hama · BOLT SCREW
PRODUCT OVERVIEW

181240: SCREW,ASSEMBLED WASHER.

- Folding case that provides perfect all-round protection for the Huawei P10 Lite - One inner compartment e.g. for business cards - Smartphone holder with rubber finish that is pleasant to the touch - Faux leather with a striking used look This part is cataloged in the U.S. Government catalog under NSN 5305-00-421-9897, 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
181240
NSN: 5305-00-421-9897
FSC: 5305 — Screws
CAGE: 57712 — TELEMECHANICS INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.089 INCHES NOMINAL IN
thread_class2A A
thread_length0.147 INCHES NOMINAL IN
fastener_length0.156 INCHES NOMINAL IN
washer_quantity1
thread_directionRIGHT-HAND
surface_treatmentCHROMATE OVERALL
width_between_flats0.250 INCHES NOMINAL IN
internal_drive_styleSLOT
primary_washer_styleFLAT INTERNAL TEETH
NSN5305-00-421-9897
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 181240 · 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: 0.089 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.156 INCHES NOMINAL IN
•
PRIMARY WASHER OUTSIDE DIAMETER: 0.281 INCHES NOMINAL IN
•
THREAD LENGTH: 0.147 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
•
HEAD STYLE: HEXAGON
•
PRIMARY WASHER STYLE: FLAT INTERNAL TEETH
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.089 INCHES NOMINAL IN
FASTENER LENGTH0.156 INCHES NOMINAL IN
PRIMARY WASHER OUTSIDE DIAMETER0.281 INCHES NOMINAL IN
THREAD LENGTH0.147 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.138 INCHES IN
HEAD STYLEHEXAGON
PRIMARY WASHER STYLEFLAT INTERNAL TEETH
THREAD DIRECTIONRIGHT-HAND
PRIMARY WASHER MATERIAL THICKNESS0.016 INCHES NOMINAL IN
WIDTH BETWEEN FLATS0.250 INCHES NOMINAL 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

No substitute or cross-reference records for this part.

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 181240?
181240 is a SCREW,ASSEMBLED WASHER manufactured by Hama.
What is the NSN for 181240?
181240 is cataloged in the U.S. Government catalog under NSN 5305-00-421-9897. 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.