NSN 5305-01-581-4778 BACB30LK4K14, 01-581-4778, 015814778
Product Details | CLOSE TOLERANCE SCREW
5305-01-581-4778 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: BACB30LK4K14, 5305-01-581-4778, 01-581-4778, 5305015814778, 015814778
Hardware and Abrasives | Screws
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | 19 JAN 2010 | 01-581-4778 | 29294 ( SCREW, CLOSE TOLERANCE ) |
Cross Reference | NSN 5305-01-581-4778
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| BACB30LK4K14 | 81205 | THE BOEING COMPANY DBA BOEING |
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Related Products | NSN 5305-01-581-4778
Technical Data | NSN 5305-01-581-4778
| Characteristic | Specifications |
|---|---|
| THREAD DIRECTION | RIGHT-HAND |
| HEAD DIAMETER | 0.473 INCHES MINIMUM AND 0.492 INCHES MAXIMUM |
| GRIP LENGTH | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM |
| FASTENER LENGTH | 1.249 INCHES MINIMUM AND 1.279 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| GRIP DIAMETER | 0.2481 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| THREAD LENGTH | 0.384 INCHES MINIMUM AND 0.394 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 28 |
| SURFACE FINISH | 32.0 MICROINCHES THREADS |
| THREAD SERIES DESIGNATOR | UNJF |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | BMS 10-85, TYPE 1, CLASS A ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| HEAD STYLE | PAN |
| SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| MATERIAL | IRON ALLOY 660 OVERALL |
| HEAD HEIGHT | 0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM |
| SURFACE TREATMENT | ALUMINUM OVERALL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SURFACE FINISH | 32.0 MICROINCHES GRIP |
| THREAD CLASS | 3A |
Restrictions/Controls & Freight Information | NSN 5305-01-581-4778
| 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 | ||