Product Details | PIN-RIVET

5320-01-251-0016 A metallic or nonmetallic item, headed at one end, with a cylindrically shaped shank which may be tapered, grooved, or threaded. A locking collar or sleeve may be provided to perform the same holding action as the clinching portion of a conventional rivet. The shank may include an external wrenching facility which breaks off at a predetermined applied torque.

Part Alternates: HL22184, HL221-8-4, 5320-01-251-0016, 01-251-0016, 5320012510016, 012510016

Hardware and Abrasives | Rivets

Supply Group (FSG) NSN Assign. NIIN
53 11 MAR 1987 01-251-0016

Drawings & Photos | NSN 5320-01-251-0016


Demand History | NSN 5320-01-251-0016

Part Number Request Date QTY Origin
HL221-8-4 2025-09-251 25 DIBBS
HL221-8-4 2024-07-205 25 DIBBS

Cross Reference | NSN 5320-01-251-0016

Part Number Cage Code Manufacturer
HL221-8-4 73197 HI-SHEAR CORPORATION
HL221-8-4 L4528 LISI AEROSPACE CANADA CORP

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Technical Data | NSN 5320-01-251-0016

Characteristic Specifications
MATERIAL STEEL COMP E4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OVERALL
SURFACE TREATMENT CADMIUM AND CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416 TY2 CL2 FED SPEC ALL TREATMENT RESPONSES OVERALL
MINIMUM TENSILE STRENGTH 160000 POUNDS PER SQUARE INCH
SHEAR STRENGTH 11800 DOUBLE POUNDS PER SQUARE INCH
HEAD STYLE A9 FLUSH COUNTERSUNK
HEAD MAJOR DIAMETER 0.5018 INCHES MINIMUM AND 0.5066 INCHES MAXIMUM
COUNTERSINK ANGLE 100.0 DEGREES NOMINAL
SHANK STYLE B31 PIN-RIVET, STRAIGHT, THREADED
FASTENER LENGTH 0.635 INCHES MINIMUM AND 0.655 INCHES MAXIMUM
WIDTH BETWEEN FLATS 0.0947 INCHES MINIMUM AND 0.0967 INCHES MAXIMUM
SHANK DIAMETER 0.2797 INCHES MINIMUM AND 0.2807 INCHES MAXIMUM
GRIP LENGTH 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD SIZE 0.250 INCHES
THREAD CLASS 3A
THREAD QUANTITY PER INCH 28
THREAD DIRECTION RIGHT-HAND
LUBRICATION CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP

Restrictions/Controls & Freight Information | NSN 5320-01-251-0016

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
No Freight Information