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11923-3-21 — SCREW,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

11923-3-21: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include surface_treatment: PASSIVATE OVERALL, thread_series_designator: UNIFIED NATIONAL JOINT FINE (UNJF), material_document_and_classification: BPS-F-69 MFR REF SINGLE MATERIAL RESPONSE OVERALL, part_name_assigned_by_controlling_agency: NAVY SPECIAL PROJECT. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-521-9591, 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
11923-3-21
NSN: 5305-01-521-9591
FSC: 5305 — Screws
CAGE: 59563 — REID PRODUCTS INC. DBA REID PRODUCTS INC (USA)
SPECIFICATIONS
surface_treatmentPASSIVATE OVERALL
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF)
material_document_and_classificationBPS-F-69 MFR REF SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5305-01-521-9591
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 11923-3-21 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: BPS-F-69 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL JOINT FINE (UNJF)
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONBPS-F-69 MFR REF SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF)
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 4
HT4027-3-21Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
WC4027-3-21Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ST3M557-3-21Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ST3M557Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 11923-3-21?
11923-3-21 is a SCREW,CLOSE TOLERANCE.
What parts can replace 11923-3-21?
There are 4 known substitutes for 11923-3-21: HT4027-3-21, WC4027-3-21, ST3M557-3-21 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 11923-3-21?
11923-3-21 is cataloged in the U.S. Government catalog under NSN 5305-01-521-9591. This indicates validated use in U.S. government and defense supply chains.
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