Serving our customers with quality and safety first.
3a
RIGHT-Hand
0.500in. ⁓1/2"
1.500in. ⁓1-1/2"
flat chamfer
0.312in. first shoulder
1.000in. first shoulder
hexagon
0.250in. ⁓1/4"
20
round first shoulder
nickel alloy
unc
1BX
Unc
Nickel alloy
20
Flat chamfer
0.500 inches
Right-hand
3a
Schedule B number: 7508900000
nmfc 093486
Other articles of nickel (excluding cloth, grill & netting of nickel wire)
FSC 5305 ⁓ Screws
unc thread series 20 thread quantity per inch flat chamfer head style 0.500" thread length right-hand 3a thread class
1. | NASM21472 | Cage 80205 |
2. | MIL-S-21472 | Cage 81349 |
3. | QQ-N-281, 1/2 IN. THD. LENGTH | Cage 81349 |
4. | 0.250 X20UNC-2AX1.0SHOULDER LG. | Cage 80204 |
Nothing similar to this part number was found in our inventory
An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in.) (1.5 mm) or larger. it has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. the head is designed to be driven with either a wrench or an inserted driver or both in sizes below no. 10 (0.190 in.) (5 mm) nominal diameter. no. 10 (0.190 in.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. a locking feature may be incorporated in the design of the head or threads. for items which are both shouldered and have an externally relieved body, use screw, externally relieved body. for items with a no. 10 (0.190 in.) (5 mm) or larger thread diameter without an inserted driver head, use bolt, shoulder. excludes bolt, internal wrenching and screw, cap, socket head.