The Rivet,blind, cataloged under National Stock Number 5320-01-731-3780, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-731-3780 |
| Primary Part Number | CR3556-6-04 |
| Item Name | Rivet,blind |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Shank Diameter | 0.200 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN |
| Head Height | 0.048 INCHES NOMINAL IN |
| Fastener Length | 0.620 INCHES MAXIMUM IN |
| Identification Code Color | SILVER |
| Surface Treatment Document and Classification | AMS 2700 INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE COLLAR |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE SLEEVE |
| Material Document and Classification | AMS 5657 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | AMS 5731 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE COLLAR |
| Head Style | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| Grip Length | 0.188 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Shank Style | SELF-PLUGGING HIGH CLINCH SHANK |
| Surface Treatment | PASSIVATE COLLAR |
| Countersink Angle | 120.0 DEGREES NOMINAL |
| Material | NICKEL ALLOY 400 SLEEVE |
| Material | IRON ALLOY 660 COLLAR |
| Material | STEEL COMP 632 STEM |
| Head Major Diameter | 0.346 INCHES MINIMUM AND 0.354 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| CR3556-6-04 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| CR3556 | D/9 Drawing number reference only Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace |
| CR3556-6-04 | 3/9 Design control — primary reference Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace |
NSN 5320-01-731-3780 is a Rivet,blind, manufactured by The Boeing Company Div Defense, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-731-3780 has 1 manufacturer part number on file: CR3556-6-04 (The Boeing Company Div Defense).
1 possible match (shared part number, not a government interchangeability claim): 5320-01-731-8122. Verify interchangeability with system specifications before substitution.
Key specifications for CR3556-6-04: Shank Diameter: 0.200 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN; Head Height: 0.048 INCHES NOMINAL IN; Fastener Length: 0.620 INCHES MAXIMUM IN; Identification Code Color: SILVER. 17 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.