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437B121 — SCREW,ADJUSTING,SPECIAL

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

437B121: SCREW,ADJUSTING,SPECIAL.

The SCREW,ADJUSTING,SPECIAL is a the manufacturer industrial component. Key specifications include end_item_identification: AIRCRAFT MODEL F-18, general_characteristics_item_description: STEEL PER AMS 5643; PASSIVATED; HEAT TREATED TO RC 30-34; 2.610 IN. O/A LG; 0.138-32 UNC-2A THD SHANK; ONE END SLOTTED A.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-150-6908, 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
437B121
NSN: 5305-01-150-6908
FSC: 5305 — Screws
CAGE: 17472 — EATON AEROSPACE LLC DBA EATON INOAC DIV FUEL & MOTION CONTROL SYSTEMS DIVISION (USA)
SPECIFICATIONS
end_item_identificationAIRCRAFT MODEL F-18
general_characteristics_item_descriptionSTEEL PER AMS 5643; PASSIVATED; HEAT TREATED TO RC 30-34; 2.610 IN. O/A LG; 0.138-32 UNC-2A THD SHANK; ONE END SLOTTED A
NSN5305-01-150-6908
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 437B121 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL PER AMS 5643; PASSIVATED; HEAT TREATED TO RC 30-34; 2.610 IN. O/A LG; 0.138-32 UNC-2A THD SHANK; ONE END SLOTTED A
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL PER AMS 5643; PASSIVATED; HEAT TREATED TO RC 30-34; 2.610 IN. O/A LG; 0.138-32 UNC-2A THD SHANK; ONE END SLOTTED A
END ITEM IDENTIFICATIONAIRCRAFT MODEL F-18
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 437B121?
437B121 is a SCREW,ADJUSTING,SPECIAL.
What is the NSN for 437B121?
437B121 is cataloged in the U.S. Government catalog under NSN 5305-01-150-6908. 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.