NSN 5305-01-591-9951 BACB30LR4U18, 01-591-9951, 015919951
Product Details | CLOSE TOLERANCE SCREW
5305-01-591-9951 A SCREW, MACHINE or SCREW, CAP, SOCKET HEAD whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 IN.) (0.025 mm) or less of a specific diameter for items (1.000 IN.) (25 mm) or less in diameter. Items over (1.000 IN.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 IN.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 IN.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the Screw Thread Standards, FED STD H28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.
Part Alternates: BACB30LR4U18, 5305-01-591-9951, 01-591-9951, 5305015919951, 015919951
Hardware and Abrasives | Screws
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | 17 FEB 2011 | 01-591-9951 | 29294 ( SCREW, CLOSE TOLERANCE ) |
Cross Reference | NSN 5305-01-591-9951
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| BACB30LR4U18 | 81205 | THE BOEING COMPANY DBA BOEING |
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Technical Data | NSN 5305-01-591-9951
| Characteristic | Specifications |
|---|---|
| THREAD DIRECTION | RIGHT-HAND |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, 100 HEAD, CROSS RECESS, LONG THD, CLOS TOLERANCE |
| THREAD SERIES DESIGNATOR | UNF |
| HEAD STYLE | FLAT COUNTERSUNK |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| THREAD QUANTITY PER INCH | 28 |
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| HEAD DIAMETER | 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM |
| FASTENER LENGTH | 1.535 INCHES MINIMUM AND 1.565 INCHES MAXIMUM |
| THREAD LENGTH | 0.425 INCHES NOMINAL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE II |
| GRIP DIAMETER | 0.249 NOMINAL MILS AND 0.250 NOMINAL CENTIMETERS |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| GRIP LENGTH | 1.115 NOMINAL MILS AND 1.135 NOMINAL CENTIMETERS |
Restrictions/Controls & Freight Information | NSN 5305-01-591-9951
| Category | Code | Description |
|---|---|---|
| Hazardous Material Indicator Code | N | There is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials |
| Demilitarization Code: | A | Non-Munitions List Item/ Non-Strategic List Item - Demilitarization not required. |
| Electro-static Discharge Susceptible: | A | No known Electrostatic Discharge (ESD) or Electromagnetic Interference (EMI) sensitivity |
| Precious Metals Indicator Code: | A | Item does not contain precious metal |
| Criticality Code: | X | The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. |
| Automatic Data Processing Equipment: | 0 | Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9) |
| Category | Code | Description |
|---|---|---|
| No Freight Information | ||