RR-C-271F
4.4.1.2 Elongation test (type I only). Elongation tests (type I only) shall be performed in accordance with ASTM A391/A391M, ASTM A413/A413M, ASTM A466/A466M, ASTM A467/A467M, or ASTM A973/A973M, as appropriate.
4.4.1.3 Proof test. Proof tests shall be performed in accordance with ASTM A391/A391M, ASTM A413/A413M, ASTM A466/A466M, or ASTM A467/A467M, as appropriate.
4.4.2 Attachments.
4.4.2.1 Type II, connecting links. Samples shall be subjected to the loads shown in the applicable tables either singly or in series. The breaking and proof tests shall be as specified in ASTM A952/A952M. If any sample link fails the proof or breaking test, the lot shall be rejected. Selected links for proof load shall be visually inspected to ensure that all links are
interchangeable without applying force. The two halves shall fit concentrically to each other and shall mate (face flush fit) to each other maintaining rivet-pin to hole alignment. The rivets shall be of sufficient diameter and length to completely fill countersunk holes when peened.
4.4.2.2 Type IV, shackles.
4.4.2.2.1 Proof test. Samples shall be subjected to proof loads shown in table VIII either singly or in series. The diameter of the attachments used in proofing shall be not greater than the pin diameter of the shackle being tested and the application of the proof load shall be at the center of the pin. After releasing the proof load, each shackle shall be examined and disassembled as specified in 3.4.3.1.2.
4.4.2.2.2 Breaking load and ductility tests. After proof testing, the required number of samples shall be subjected to the breaking load test to determine compliance with table VIII. The diameter of the attachment used in the breaking test shall be not greater than the pin diameter of the shackle being tested; the application of the load shall be at the center of the pin. After breaking, the sample shall be inspected and measured to determine conformance with 3.4.3.1.5.
4.4.2.2.3 Rejections. If any shackle fails to pass the proof load, breaking load, or ductility test, all shackles in the lot shall be rejected.
4.4.2.3 Type V, hooks, classes 1, 2, 3, and 6.
4.4.2.3.1 Proof test. Samples shall be subjected to the applicable proof loads provided in this specification. Hooks shall withstand the proof test without any noticeable permanent opening of the hook at the throat.
4.4.2.3.2 Breaking load and Ductility tests. Samples subjected to the breaking load strength test shall exhibit permanent deformation in the throat opening after failure.
4.4.2.3.3 Rejections. If any hook fails to pass the proof load, break load, or ductility tests, the lot shall be rejected.
39
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business