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Technical Data Sheet
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178889 — BOLT,ASSEMBLED WASHER

✓ Government record, cited
Hama · BOLT SCREW
PRODUCT OVERVIEW

178889: BOLT,ASSEMBLED WASHER.

- 3D display protection glass for protection of the sensitive smartphone display against impacts, shocks and fingerprints - Protects the entire front thanks to rounded edges - Scratch-resistant, increasing the smartphone's service life and value - Precise cut-outs for the home button, speaker and camera - Easy to attach and to remove without leaving any residue - High-tech real glass: 0.33 mm thin This part is cataloged in the U.S. Government catalog under NSN 5306-00-017-8889, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
178889
NSN: 5306-00-017-8889
FSC: 5306 — Bolts
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 1050 OR STEEL COMP 1566 OVERALL
head_styleHEXAGON
head_height0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
thread_class2A A
thread_length0.500 INCHES MINIMUM IN
fastener_length0.625 INCHES NOMINAL IN
washer_quantity1
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OR ZINC OVERALL
width_between_flats0.428 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
primary_washer_styleFLAT EXTERNAL TEETH
nominal_thread_diameter0.250 INCHES IN
NSN5306-00-017-8889
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 178889 · 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: 0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.625 INCHES NOMINAL IN
•
PRIMARY WASHER OUTSIDE DIAMETER: 0.462 INCHES MINIMUM AND 0.474 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.500 INCHES MINIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD ALL MATERIAL RESPONSES OVERALL
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: HEXAGON
•
PRIMARY WASHER STYLE: FLAT EXTERNAL TEETH
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
FASTENER LENGTH0.625 INCHES NOMINAL IN
PRIMARY WASHER OUTSIDE DIAMETER0.462 INCHES MINIMUM AND 0.474 INCHES MAXIMUM IN
THREAD LENGTH0.500 INCHES MINIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEHEXAGON
PRIMARY WASHER STYLEFLAT EXTERNAL TEETH
THREAD DIRECTIONRIGHT-HAND
PRIMARY WASHER MATERIAL THICKNESS0.250 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-004-7044 5306-00-007-6129 5306-00-008-7899 5306-00-009-4739 5306-00-118-7332 5306-00-151-1777 5306-00-255-4507 5306-01-101-2459
SUBSTITUTES & CROSS-REFERENCES 2
487282Reference document
Same NSN cross-reference
Reference document — Secondary reference
5306000178889Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 178889?
178889 is a BOLT,ASSEMBLED WASHER manufactured by Hama.
What parts can replace 178889?
There are 2 known substitutes for 178889: 487282, 5306000178889. Substitute compatibility should be verified for your specific system.
What is the NSN for 178889?
178889 is cataloged in the U.S. Government catalog under NSN 5306-00-017-8889. This indicates validated use in U.S. government and defense supply chains.
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