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4ZE16 — INSERT,SCREW THREAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

4ZE16: INSERT,SCREW THREAD.

The INSERT,SCREW THREAD is a the manufacturer industrial component. Key specifications include length: 0.438 INCHES NOMINAL IN, material: STEEL OVERALL, special_features: INTERAL THREAD 0.250-20 UNC-2B AND EXTERNAL THREAD 0.438-14 UNC-2A A, thread_direction: RIGHT-HAND, end_item_identification: TOOLS AND SHOP SETS, thread_series_designator: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the U.S.

Government catalog under NSN 5325-01-598-1597, 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
4ZE16
NSN: 5325-01-598-1597
FSC: 5325 — Fastening Devices
CAGE: 25795 — W.W. GRAINGER, INC. DIV GOVERNMENT SALES DIVISION (USA)
SPECIFICATIONS
length0.438 INCHES NOMINAL IN
materialSTEEL OVERALL
special_featuresINTERAL THREAD 0.250-20 UNC-2B AND EXTERNAL THREAD 0.438-14 UNC-2A A
thread_directionRIGHT-HAND
end_item_identificationTOOLS AND SHOP SETS
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
part_name_assigned_by_controlling_agencyE-Z LOK THREAD INSERT
NSN5325-01-598-1597
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 4ZE16 · 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
•
LENGTH: 0.438 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
MATERIAL: STEEL OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS
LENGTH0.438 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
SPECIAL FEATURESINTERAL THREAD 0.250-20 UNC-2B AND EXTERNAL THREAD 0.438-14 UNC-2A A
PART NAME ASSIGNED BY CONTROLLING AGENCYE-Z LOK THREAD INSERT
END ITEM IDENTIFICATIONTOOLS AND SHOP SETS
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
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 4ZE16?
4ZE16 is a INSERT,SCREW THREAD.
What is the NSN for 4ZE16?
4ZE16 is cataloged in the U.S. Government catalog under NSN 5325-01-598-1597. 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.