MIL-DTL-22499 Shim Stock, Laminated \(S/S By Sae-Ams-Dtl-22499\)

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MIL-DTL-22499D

3.3 Construction and dimensions. The shim stock shall be fabricated from the materials specified herein.

The applicable type, class and nominal size of the shim stock shall be as specified in Table I, the applicable

specification sheet, or as otherwise required. The lateral dimensions shall be as specified in the contract or purchase

order for compositions 5 and 6 (See 6.2 and 6.). Unless otherwise specified, for compositions 1, 2, 3, and 4 the

lateral dimensions shall be as specified in the applicable specification sheet, or as otherwise required. Unless

otherwise specified the tolerance of the specification width and length shall be �1/8 inch.

3.3.1 Construction details. The laminations and solid stock shall be bonded together throughout the whole

surface area in a manner which will permit peeling of the laminations for adjustment of the shim thickness without

separation of the remaining laminations and solid parts. The shim stock shall be capable of being cut, using suitable

tools, without separation and shall remain intact with normal handling.

3.3.2 Tolerance on nominal shim stock size. The tolerance on nominal shim stock size shall be in

accordance with Table II.

3.3.3 Tolerance on lamination thickness. The thickness of Class 1 and 2 laminations (see 1.2) shall be

within �.0002 inch and �.0003 inch, respectively, of the values specified.

3.3.4 Thickness of bond. The thickness of the bond between laminates shall not exceed .0003 inch.

3.4 Water immersion. The shim stock shall be capable of withstanding total immersion in water at a

temperature of 120�F � 5�F for a period of 3 hours without separation of laminations.

3.5 Workmanship. The shim stock shall be uniform in quality, clean, and free of defects detrimental to

functional performance of the material.

4. VERIFICATION

4.1 Classification of inspections. The inspection of the shim stock shall be classified as:

a. First article inspections (see 4.2).

b. Quality conformance inspections (see 4.4).

4.2 First article inspection. The first article inspection shall consist of the inspection specified in 4.4 and

the additional tests in 4.3. The contractor shall be responsible for the performance of the first article inspection (see

6.3).

4.2.1 First article sample. Unless otherwise specified in the contract or purchase order, the first article

sample shall consist of two 1 inch by 12 inch strips of shim stock (see 6.3.).

4.3 First article testing.

4.3.1 Separation of laminations. Representative strips of the sample shim stock specified in 4.2.1 shall be

allowed to stand for a minimum period of 8 hours following manufacture or until complete cure, whichever comes

first, before being tested for peel strength. The laminations shall peel without separation of the remaining portion.

4.3.1.1 Laminations and bond thickness. In the process of performing the test specified in 3.1, the shim

stock shall be dimensionally examined to determine compliance with the requirements of 3.3.3 and 3.3.4.

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