PartsTable TECHNICAL DATA SHEET

JULY 2026Technical Data Sheet

S2-1BSign,traffic

Name: S2-1B
SKU: 9905-00-721-8291

Federal Prison Industries, Inc - Ebg · NSN 9905-00-721-8291 · FSC 9905 · No Item Name Available

Verified by PartsTable

NSN 9905-00-721-8291 — this item is cataloged by the U.S. Government under National Stock Number 9905-00-721-8291. Primary manufacturer part number: S2-1B.

9905-00-721-8291 — No Item Name Available illustration

Features

Sign,traffic — FSC 9905
Material: ALUMINUM ALLOY
Color: BLACK BORDER
Thickness: 0.080 INCHES NOMINAL IN
Color: WHITE INSCRIPTION BACKGROUND
Width: 36.000 INCHES NOMINAL IN
Design Shape: RECTANGULAR WITH POINTED END
Inscription: SCHOOL CROSSING

Applications

Applications requiring Aluminum Alloy construction

General Description

The Sign,traffic, cataloged under National Stock Number 9905-00-721-8291, is classified within Federal Supply Class 9905 (No Item Name Available) of the Miscellaneous group. The primary manufacturer of record is Federal Prison Industries, Inc - Ebg. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	9905-00-721-8291
Primary Part Number	S2-1B
Item Name	Sign,traffic
FSC / FSG	9905 / 99 — No Item Name Available
Manufacturer	Federal Prison Industries, Inc - Ebg
Status	ACTIVE
Material	ALUMINUM ALLOY
Color	BLACK BORDER
Thickness	0.080 INCHES NOMINAL IN
Color	WHITE INSCRIPTION BACKGROUND
Width	36.000 INCHES NOMINAL IN
Design Shape	RECTANGULAR WITH POINTED END
Inscription	SCHOOL CROSSING
Reflecting Surface	BACKGROUND
Length	36.000 INCHES NOMINAL IN
Color	BLACK INSCRIPTION
Marking Designation	SYMBOL

Lifecycle & Compliance

Acquisition Status	ACTIVE
HAZMAT	No

⇄ Verified Substitutes 12

6680-00-053-3961S21 INTERCHANGEABLE

Plug,sight

Eaton Aerospace Llc Div Fluid and Electrical Distribution Division

5120-00-156-8609S21 INTERCHANGEABLE

Die,crimping Tool

Souriau Usa, Inc. Dba Souriau Usa Inc

3460-00-189-9132 INTERCHANGEABLE

Holder,cutting Tool

5130-00-293-1411IM302A INTERCHANGEABLE

Socket,socket Wrench

Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc

1650-00-310-212120020-248-100 INTERCHANGEABLE

Filtering Disk,fluid

Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div

4810-00-325-3197S-21-INTERNAL#0319079 INTERCHANGEABLE

Seat,valve

Sloan Valve Company

3433-00-355-6243638948 INTERCHANGEABLE

Tip,welding Torch

Esab Group, Inc., the Dba Esab Welding and Cutting Products Div Esab Welding and Cuttng

5950-00-419-9492247ASC1287-001 INTERCHANGEABLE

Transformer,power

Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier

3110-00-690-8923LM501349-LM501310 INTERCHANGEABLE

Bearing,roller,tapered

The Timken Corporation

4730-01-128-524120020-325-100 INTERCHANGEABLE

Strainer Element,sediment

Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div

Cross-Reference Index

Part Number	Manufacturer
S2-1	Department of Transportation (USA)
S2-1B PRIMARY	Federal Prison Industries, Inc - Ebg (USA)

Related Parts

6680-00-053-3961INTERCHANGEABLE

PLUG,SIGHT

S21

5120-00-156-8609INTERCHANGEABLE

DIE,CRIMPING TOOL

S21

3460-00-189-9132INTERCHANGEABLE

HOLDER,CUTTING TOOL

5130-00-293-1411INTERCHANGEABLE

SOCKET,SOCKET WRENCH

IM302A

1650-00-310-2121INTERCHANGEABLE

FILTERING DISK,FLUID

20020-248-100

4810-00-325-3197INTERCHANGEABLE

SEAT,VALVE

S-21-INTERNAL#0319079

3433-00-355-6243INTERCHANGEABLE

TIP,WELDING TORCH

638948

5950-00-419-9492INTERCHANGEABLE

TRANSFORMER,POWER

247ASC1287-001

3110-00-690-8923INTERCHANGEABLE

BEARING,ROLLER,TAPERED

LM501349-LM501310

4730-01-128-5241INTERCHANGEABLE

STRAINER ELEMENT,SEDIMENT

20020-325-100

4730-01-130-5476INTERCHANGEABLE

STRAINER ELEMENT,SEDIMENT

S21-355-100

4730-01-158-8417INTERCHANGEABLE

ADAPTER,STRAIGHT,PIPE TO HOSE

082-0233-02-0

Frequently Asked Questions

What is NSN 9905-00-721-8291?

NSN 9905-00-721-8291 is a Sign,traffic, manufactured by Federal Prison Industries, Inc - Ebg, classified under FSC 9905 (No Item Name Available). Status: active.

What are the part numbers for NSN 9905-00-721-8291?

NSN 9905-00-721-8291 has 2 cross-referenced part numbers: S2-1 (Department of Transportation), S2-1B (Federal Prison Industries, Inc - Ebg).

What NSN replaces 9905-00-721-8291?

There are 12 known substitutes for 9905-00-721-8291: 6680-00-053-3961, 5120-00-156-8609, 3460-00-189-9132 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S2-1B?

Key specifications for S2-1B: Material: ALUMINUM ALLOY; Color: BLACK BORDER; Special Features: REFLECTIVITY: STANDARD,PENTAGONAL SHAPE; Thickness: 0.080 INCHES NOMINAL IN. 12 total characteristics are documented in the Federal Logistics Information System.

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.

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