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Technical Data Sheet
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137889 — BOLT,EYE

✓ Government record, cited
Hama · BOLT SCREW
PRODUCT OVERVIEW

137889: BOLT,EYE.

- Perfect all-round protection for taking photos and making phone calls with a smartphone - Booklet case with an individually adjustable holder for different smartphones - Rotatable holder allows taking photos in the case - Magnetic fastener for quick access and trouble-free locking - Slip-in compartments for cards or the like - Two inner compartments e.g. for business cards - Large compartment over the entire length of the interior This part is cataloged in the U.S. Government catalog under NSN 5306-00-166-1315, indicating validated use in U.S.

government and defense logistics supply chains.

WHERE IT FITS
137889
NSN: 5306-00-166-1315
FSC: 5306 — Bolts
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 5130 OVERALL
thread_class3A A
thread_length1.000 INCHES MINIMUM IN
hardness_rating21.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
nominal_thread_diameter0.312 INCHES IN
thread_quantity_per_inch24
thread_series_designatorUNF
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5306-00-166-1315
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 137889 · 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
•
THREAD LENGTH: 1.000 INCHES MINIMUM IN
•
HARDNESS RATING: 21.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
SURFACE TREATMENT: CADMIUM OVERALL
•
THREAD CLASS: 3A A
•
THREAD QUANTITY PER INCH: 24
TECHNICAL CHARACTERISTICS
THREAD LENGTH1.000 INCHES MINIMUM IN
HARDNESS RATING21.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES IN
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTCADMIUM OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
THREAD CLASS3A A
THREAD QUANTITY PER INCH24
MATERIALSTEEL COMP 5130 OVERALL
THREAD SERIES DESIGNATORUNF
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

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 137889?
137889 is a BOLT,EYE manufactured by Hama.
What is the NSN for 137889?
137889 is cataloged in the U.S. Government catalog under NSN 5306-00-166-1315. 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.