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22-99615 — MAIN INSTRUMEN,SPEC

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

22-99615: MAIN INSTRUMEN,SPEC.

The MAIN INSTRUMEN,SPEC is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: PAN NO. 2, head_height: 0.077 INCHES NOMINAL IN, head_diameter: 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN, fastener_length: 0.250 INCHES NOMINAL IN, surface_treatment: CADMIUM OVERALL.

This part is cataloged in the U.S. Government catalog under NSN 5305-00-737-6418, 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
MRO→ MRO_GENERAL→ 22-99615
NSN: 5305-00-737-6418
NIINs: 007376418, 015952917
FSC: 5305 — Screws
CAGE: 99551 — GOODRICH CORPORATION DBA GOODRICH CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_stylePAN NO. 2
head_height0.077 INCHES NOMINAL IN
head_diameter0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
fastener_length0.250 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
internal_drive_styleSLOT
nonmachine_thread_styleNARROW FLUTE (TYPE E)
nonmachine_nominal_thread_diameter0.138 INCHES IN
NSN5305-00-737-6418
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 22-99615 · 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
•
NONMACHINE NOMINAL THREAD DIAMETER: 0.138 INCHES IN
•
HEAD HEIGHT: 0.077 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.250 INCHES NOMINAL IN
•
NONMACHINE THREAD STYLE: NARROW FLUTE (TYPE E)
•
HEAD STYLE: PAN NO. 2
•
SURFACE TREATMENT: CADMIUM OVERALL
•
INTERNAL DRIVE STYLE: SLOT
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
NONMACHINE NOMINAL THREAD DIAMETER0.138 INCHES IN
HEAD HEIGHT0.077 INCHES NOMINAL IN
FASTENER LENGTH0.250 INCHES NOMINAL IN
NONMACHINE THREAD STYLENARROW FLUTE (TYPE E)
HEAD STYLEPAN NO. 2
SURFACE TREATMENTCADMIUM OVERALL
INTERNAL DRIVE STYLESLOT
MATERIALSTEEL OVERALL
HEAD DIAMETER0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 22-99615?
22-99615 is a MAIN INSTRUMEN,SPEC. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 22-99615?
22-99615 is cataloged in the U.S. Government catalog under NSN 5305-00-737-6418. 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.