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MS20001 : Mil-Spec Hardware

MS20001 : Mil-Spec Hardware Specification
Hinge, Butt, Structural, Extruded

MS20001 CAD DrawingClick on drawing for larger view


1. MATERIAL: Aluminum alloy 2024-T3511, per QQ-A-200/3, OP aluminum alloy 7075-T73511, per QQ-A-200/11 (see part numbering).

2. FINISH: Anodize in accordance with MIL-A-8625, Type II, chemical surface treat in accordance with MIL-C-5541, (ends of all hinges shall be finished)

3. MARKING: Ink stamp MS20001 (dash number) regular intervals along length of hinge so that any three inch length will have at least one complete identification in figures not less than .060 inches high. See note 5.

4. Complete hinges shall be furnished as an assembly with CAD plated CRES hinge pins of the same length in accordance with MS20253 Unless titanium hinge pins in accordance with MS28253 are specified (see part numbering).

5. Designation for anodizing, chemical surface treatment, hinge style, and length shall not be included in marking.

6. Only complete hinges to be stocked by services.

7. Use MS20257 hinge whenever load requirements permit.


  • 1. Dimensions are in inches.
  • 2. Remove all burrs and sharp edges
  • 3. Type X half hinge mates with Type Y half hinge, as shown
  • 4. Type H half hinge mates with Type H half hinge
  • 5. For service procurement, the preferred stock length of complete hinges is 72 inches
  • 6. Part numbering (nomenclature to be included on shipping documents only)
  • Part numbering shall consist of the following (in sequence)
  • a. MS20001
  • b. “P” for anodized finish, “C” for chemical surface treatment, omission of code letter will indicate bare finish.
  • c. “H”, “X”, or “Y” to designate half hinge style, omission of code letter will indicate complete hinge.
  • d. “A” for 7075-T73511 aluminum alloy hinge, omission of “A” will indicate 2024-T3511 aluminum alloy.
  • e. “T” for titanium hinge pin (for complete hinge only); omission of “T” will indicate cadmium pasted CRES hinge pin.
  • f. Dash number (Table I), omit dash if preceded by code letter
  • g. A dash followed by length “L” expressed in inches and hundredths

8. EXAMPLES OF PART NUMBERS: MS20001-4-1200 = complete hinge, bare finish, aluminum 2024-T3511, CAD plated CRES hinge pin, 1 500 inches wide, 12.00 inches long. MS20001CHA4-900 = Type H half hinge, chemical surface treatment, aluminum 7075-T73511, 1.500 inches wide, 9.00 inches long

9. Do not specify “P” for anodize if hinge is to be spotwelded.

10. Referenced documents shall be of the issue in effect on date of invitation for bids, or request for proposal except that referenced adopted industry documents shall give the date of the issue adopted.

11. For design feature purposes, this standard takes precedence over procurement documents referenced herein.

Need the Spec?

Click here to download MS20001 Specification
(PDF Format).

Great Lakes Fasteners
2204 East Enterprise Parkway
Twinsburg, Ohio 44087

Ohio: 330-425-4488
Nationwide: 800-589-4578
Fax: 330-425-4705

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Copyright Great Lakes Fasteners, Inc. 2008

GLFTechnical Fastener Supply specializes in a wide range of industrial and military specification (MIL Spec) fasteners; including MS fasteners, AN Fasteners, and NAS Fasteners.