MS16995H
NOTES:
1. All dimensions are in inches.
2. The basic thread length ‘‘M'' (Table I) is a referenced value controlled by the grip length and ‘‘L'' length as specified.
3. MS16995 supersedes MS35461 in part.
4. In the event of a conflict between the text of this document and the references cited herein, the text of this document shall take precedence.
5. Unless otherwise specified, issues of referenced documents are those in effect at the time of solicitation.
6. MS16995 Socket Head Cap Screws manufactured prior to 25 April 1997 may be used until stock is depleted.
REQUIREMENTS:
1. MATERIAL:
Austenitic Corrosion-Resistant Steel screws shall be manufactured from Type 304 (UNS S30400), Type 304L (UNS S30403), Type 305 (UNS S30500), Type 316 (UNS S31600), Type 316L (UNS S31603), Type 384 (UNS S38400), or Type XM-7(UNS S30430) in accordance with the chemical compositions specified in ASTM F 593.
(See Material Identification Marking and Material Code).
2. FINISH:
Passivate in accordance with QQ-P-35 or
Black Oxide coating in accordance with MIL-C-13924, Class 4. (Except for Type 316 or Type
316L).
(See Finish Code).
3. MECHANICAL PROPERTIES:
The minimum tensile strength in load pounds, indicated for each size in Table I, is based on 80,000
PSI minimum tensile strength. Load pounds are calculated by the stress areas indicated in FED- STD-H28/2. The yield strength, based on 0.2 percent offset, shall be 30,000 PSI minimum. The minimum hardness shall be HRB 80.
4. MAGNETIC PERMEABILITY:
When specified, screws shall have a magnetic permeability of less than 2.0 (air = 1.0) for a field strength H = 200 oersteds using a magnetic permeability indicator per ASTM A 342.
Note: Cold worked screws may not be capable of meeting permeability and strength requirements simultaneously.
5. THREADS:
Screw threads shall be Unified external threads Class 3A UNC in accordance with FED-STD-H28/2. Acceptability of screw threads shall be in accordance with FED-STD-H28/20, System 22.
Screws above the dashed lines shall have complete (full form) threads extended to within two (2) threads of the head as measured with a thread ring gage.
6. HEAD STYLE:
Head of screw may be plain or knurled at manufacturer's option.
7. MANUFACTURER IDENTIFICATION MARKING:
6
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business